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A pitcher must retaliate when his batter is hit intentionally
If an opposing pitcher hits your batter in what is perceived as a deliberate or retaliatory manner, your pitcher is expected to hit an opposing batter in turn. This 'eye for an eye' principle is a cornerstone of the unwritten code and is enforced by catchers, veteran pitchers, and managers.
Don't peek back at the catcher's signs as a batter
A batter who physically turns his head or otherwise attempts to look at the catcher's pitch signals is considered to be cheating the game's internal code. Catchers who detect a batter peeking will immediately call for a pitch thrown at or near the batter. This is treated as one of the gravest in-game violations.
Don't throw at a batter's head, even in retaliation
Within a retaliation culture that accepts hitting batters in the body as an enforcement mechanism, throwing at or near a batter's head crosses a separate, graver line. Even pitchers who embrace the HBP code distinguish between 'sending a message' at the ribs and genuinely endangering a player's life.
Never mention a no-hitter while it's in progress
Players, coaches, and broadcasters avoid acknowledging an ongoing no-hitter, fearing they will 'jinx' it. Teammates typically isolate the pitcher, refuse to sit near him, and avoid all conversation about the feat until it is over. One of baseball's most universally observed superstitions.
Don't admire your home run or flip your bat excessively
A batter who stands at the plate watching a home run, flips his bat dramatically, or trots the bases with deliberate slowness to taunt the pitcher is subject to retaliation — typically an inside pitch or HBP in a future at-bat. This is among the most enforced norms in the game.
Don't steal bases when your team leads by a wide margin
Stealing bases late in a game when leading by a large margin (commonly cited as 5+ runs) is considered running up the score and disrespecting a beaten opponent. The expected response is for the trailing team's pitcher to hit a batter in retaliation.
Don't bunt to break up a no-hitter
Laying down a bunt solely to end a no-hitter — when you would not otherwise bunt in that situation — is considered a cowardly and disrespectful shortcut. Hitters are expected to earn their hits legitimately. The pitcher who gives up such a bunt-hit has often been viewed with sympathy by fans and peers.
Keep the home run trot at a respectful pace
Even without a bat flip, a batter who trots the bases dramatically slowly after a home run — lingering to prolong the pitcher's embarrassment — invites retaliation. The trot should be composed and unhurried, not theatrical or deliberately taunting.
Per OBR Rule 3.01, the baseball must be a sphere formed by yarn wound around a small core of cork, rubber, or similar material, covered with two stripes of white horsehide or cowhide, tightly stitched together.
— Rule 3.01
Why people argue about this
People often assume that only players need to wear identical uniforms, forgetting that coaches, managers, and even umpires must adhere to this rule as well. The confusion arises because it's easy to overlook these additional roles when focusing on what players see in-game.
Per OBR Rule 3.02(a), the bat shall be a smooth, round stick not more than 2¾ inches (6.985 cm) in diameter at the thickest part and not more than 42 inches (106.68 cm) in length. The bat shall be ...
— Rule 3.02
Why people argue about this
People often argue that this uniform color rule doesn't apply in games where teams are from different countries with distinct team colors already, thinking it's just a silly nitpick about aesthetics. But actually, the confusion arises because MLB wants to maintain a level playing field and avoid distracting visual differences that could affect players' focus or opponents' strategies.
All fielders, with the exception of the first baseman and catcher, may use a glove or mitt of any weight. OBR Rule 3.05 specifies size limits: Fielder's glove: Not more than 12 inches (30.48 cm) measured from the tip of any finger to the bottom of the glove, and not more than 7¾ inches (19.685 cm...
— Rule 3.05, Rule 3.06, Rule 3.07
Why people argue about this
People often argue that this rule only applies to uniforms and doesn't cover equipment like gloves. But in reality, it does extend to all uniform items including gloves, which can lead to misunderstandings about what exactly constitutes "uniform" according to MLB's OBR guidelines.
Per OBR Rule 3.09, batters must wear a protective helmet while at bat, while running the bases, and while in the on-deck circle. Helmets must carry the official approval mark of the Commissioner and must have at least one ear flap (facing the pitcher).
— Rule 3.09
Why people argue about this
People often assume that the uniform color rule only applies during games, forgetting that it must be adhered to in all team activities like batting practice or traveling to away games. The confusion arises because they overlook the requirement for identical uniforms across all on-field and off-field situations, thinking it's just a game-time concern.
Per OBR Rule 3.03(a), all players on a team shall wear uniforms identical in color, trim, and style. Shoes with pointed spikes similar to track or golf shoes are prohibited (Rule 3.03(b)).
— Rule 3.03
Why people argue about this
People often assume that only the players need to wear identical uniforms, forgetting that coaches, managers, and sometimes even umpires might also be seen in those teams' colors. The confusion arises because they overlook the requirement for all personnel associated with a team to match in uniform style, color, and trim as per OBR Rule 3.03(a).
Per OBR Rule 2.01, the playing field is laid out per the Official Baseball Rules diagram. The infield is a 90-foot (27.432 m) square, with bases at each corner.
— Rule 2.01
Why people argue about this
People often assume that the Official Baseball Rules diagram is a strict blueprint for how the field must be laid out, leading them to argue about minor discrepancies in dimensions or markings they perceive as violations. However, the actual rule states it's "laid out per" the diagram, meaning deviations are allowed as long as they don't affect gameplay.
Per OBR Rule 2.02: Home plate: A 17-inch (43.18 cm) square of whitened rubber, set in the ground so the front edge is even with the rear corner of the batter's box. The sides extending back must be beveled.; First, second, and third base: Must be 15 inches (38.10 cm) square, between 3 and 5 inche...
— Rule 2.02
Why people argue about this
People often assume that the dimensions of the pitcher's plate are just 24 inches by 60 inches, which is why they argue. However, the official rule only specifies it as a "rectangular slab of whitened rubber," leaving room for interpretation about exact measurements and material composition.
Per OBR Rule 2.04, the pitcher's plate (rubber) shall be a rectangular slab of whitened rubber, 24 inches (60.96 cm) by 6 inches (15.24 cm). It shall be set in the ground so the front edge is 60 feet, 6 inches (18.44 m) from the rear point of home plate.
— Rule 2.04
Why people argue about this
People often assume that the 24-inch rubber is perfectly square, forgetting it's a rectangle with two sides being longer at 18 inches and the other two shorter at 6 inches. This leads to misunderstandings about where exactly to place the pitcher when setting up for his mound, causing arguments during games.
Batter's box (Rule 2.05): 4 feet (121.92 cm) wide by 6 feet (182.88 cm) long, located on either side of home plate.; Catcher's box (Rule 2.06): 8 feet (243.84 cm) in length and 43 inches (109.22 cm) wide.; Coaches' boxes (Rule 2.07): Located adjacent to first and third base, each 8 feet (243.84 c...
— Rule 2.05, Rule 2.06, Rule 2.07
Why people argue about this
People often argue that they don't understand how far exactly fair territory extends beyond foul lines, especially when it comes to near misses at the fence or just over the line. The confusion arises because the official definitions are quite vague and can lead to different interpretations based on where players stand relative to the fence and foul lines.
Per the OBR Definitions of Terms, "Fair Territory" is that part of the playing field within and including the first base and third base lines from home base to the bottom of the playing field fence, and as further determined by the foul lines. "Fo...
Why people argue about this
People often think that fair territory only includes the area between the foul lines and the outfield fence, forgetting about the infield part of it. But actually, the definition extends all the way from home plate to the bottom of the fence along both base paths, making the confusion arise because they overlook this crucial detail in the infield.
Each team has a dugout, one on each side of the playing field. Only players in uniform, managers, coaches, trainers, and batboys may occupy the dugout during a game (OBR Rule 4.05).
— Rule 4.05
Why people argue about this
People often assume that anyone in a team's uniform can enter the dugout during games, leading to misunderstandings about who is allowed there. The actual rule specifies only players in uniform, managers, coaches, trainers, and batboys are permitted, which causes confusion when spectators or non-team personnel try to access these areas.
Per OBR Rule 4.01, a regulation game is played between two teams of nine players each. Each team's manager must deliver to the umpire-in-chief and the opposing manager a batting order containing each starting player's name and position at least 5 ...
— Rule 4.01, Rule 5.10
Why people argue about this
People often assume that a regulation game in baseball only requires 9 players per team, thinking they can just add more later if needed. But actually, OBR Rule 4.01 clearly states teams must play with exactly nine players from start to finish of the game, and any deviation is considered illegal under this rule.
Per OBR Rule 5.10(a), the manager shall immediately notify the umpire-in-chief when a substitution is made. A substitute player, once entered in the game, cannot be removed and re-entered; a player removed from the game is finished for that game.
— Rule 5.10, Rule 5.11
Why people argue about this
People often think that substitutions in baseball are just about picking a new player from the dugout without needing to inform anyone, but actually, they must notify the umpire-in-chief immediately as per OBR Rule 5.10(a) so all on-field players and officials are aware of who's playing next.
Per OBR Rule 5.11, a hitter may be designated for any pitcher, but not be a fielder. Selection of a designated hitter is optional and must be announced before the game.
— Rule 5.11
Why people argue about this
People often assume that a designated hitter can only be used against pitchers from their own team, which is incorrect. Actually, MLB allows a manager to substitute any player for any pitcher in any game, regardless of whether they are on their roster or not, as long as it's done according to the specific rule outlined in OBR Rule 5.11.
Per OBR Rule 8.01, the umpire-in-chief (home plate umpire) shall have general authority to enforce all rules, call balls and strikes, make all rulings on the batter, and have authority to remove players, managers, or coaches for violations. A full...
— Rule 8.01, Rule 8.02, Rule 8.04
Why people argue about this
People often assume that the umpire-in-chief only makes calls like balls and strikes and doesn't have much authority over other aspects of gameplay. But actually, they misunderstand that he or she has broad discretion to enforce all rules, including removing players for violations, which can lead to arguments about whether certain decisions were fair or within their purview.
Per OBR Rule 4.05, the manager is responsible for the conduct of the team and must be in uniform. Each team is entitled to a manager and up to six coaches (as per current MLB rules).
— Rule 4.05
Why people argue about this
People often assume that managers can be seen in casual clothes during games, which leads to misunderstandings about their attire requirements. However, the official rule clearly states they must wear uniform, so there's no room for interpretation when it comes to what constitutes "uniform.
Per OBR Rule 5.01, the home team takes the field and the visiting team sends its first batter to the plate to start the game. Before the game starts, the umpire-in-chief calls "Play" to begin.
— Rule 5.01, Rule 5.07
Why people argue about this
People often assume that a pitch is only considered delivered when the ball leaves the pitcher's hand, so they argue about pitches where the ball appears to be released but doesn't actually cross home plate. Actually, according to Rule 5.07(b), as long as the pitcher’s arm passes their hip in the forward swing, it counts as a delivery - even if the ball hasn’t fully left the pitcher's hand yet.
Beginning with the 2023 season, MLB implemented a mandatory pitch clock under OBR Rule 5.07(c): The pitcher must begin the pitching motion within 15 seconds of receiving the ball from the catcher (or when the pitcher is otherwise ready) when no runners are on base.; The pitcher must begin the pit...
— Rule 5.07
Why people argue about this
People often assume that a pitch is only considered delivered when it actually crosses home plate, forgetting that Rule 5.07(b) states the pitcher's arm must pass their hip in the forward swing for it to be deemed thrown. This oversight leads to disputes over whether a pitch was "live" or not.
Per OBR Rule 5.07(a), the pitcher must take the pitching position by standing on the pitcher's plate in one of two legal positions: The Windup Position: The pitcher faces the batter, with the pivot foot in contact with the pitcher's plate and the other foot free.; The Set Position: The pitcher st...
— Rule 5.07
Why people argue about this
People often assume that a pitch is only considered delivered when the ball leaves the pitcher's hand, so they argue about whether it was in play or not based on when the arm started moving. But actually, according to Rule 5.07(b), as long as the pitcher's arm passes their hip during the forward swing, the pitch is deemed delivered and can be called a strike or ball depending on where it lands.
Per OBR Rule 5.04(a), batters shall bat in the order their names appear in the batting order. Each batter's turn at bat commences when they step into the batter's box and concludes when they are put out, becomes a baserunner, or is substituted for by a pinch hitter.
— Rule 5.04, Rule 5.09
Why people argue about this
People often assume that a batter's position in the order is purely for aesthetic or tradition purposes rather than having strategic importance, but actually, their batting order spot directly influences when they come up to bat, which can affect timing and strategy against pitchers' tendencies based on what they've seen earlier in the lineup.
Per OBR Rule 5.05(a), a batter becomes a baserunner when: A fair ball is hit that is not caught on the fly.; The catcher fails to catch the third strike and first base is unoccupied, or there are two outs (dropped third strike, Rule 5.05(a)(2)).; Four balls (a walk) are called by the umpire, per ...
— Rule 5.05, Rule 5.09
Why people argue about this
People often assume that a runner can skip touching a base if they're just running past it slightly, thinking it's about speed rather than distance. However, the confusion arises because the rule actually specifies a precise 3 feet (91 cm) threshold for being out, not considering how fast or far the runner runs past each base.
Per OBR Rule 5.09(a)(12), an infield fly is a fair fly ball (not a line drive or bunt) that can be caught by an infielder with ordinary effort, when first and second bases, or first, second, and third bases are occupied before two are out. The bat...
— Rule 5.09
Why people argue about this
People often assume that an infield fly is only called when a runner is on first base, forgetting about the crucial part where it's mentioned that first, second, and third bases are occupied before two outs. This oversight leads to misunderstandings because they miss out on the full context of when this rule applies, which can lead to confusion in game situations.
, on the infield dirt or grass of the infield area), with two infielders on each side of second base. No infielder may position themselves in the outfield grass prior to the pitch.
— Rule 5.02
Why people argue about this
People often think that the infielders can be positioned anywhere within their normal playing area as long as they're all on the field at once, but actually, under OBR Rule 5.02(c), they must stay within the outer boundary of the infield for every pitch to ensure fair play and avoid unfair advantages.
Per OBR Rule 5.09, the defensive team records outs in the following ways (among others): A fly ball caught before touching the ground (out on appeal or force not required).; A runner tagged with the ball while not in contact with a base (tag out).; A runner is forced to advance and the fielder wi...
— Rule 5.09
Why people argue about this
People often assume that a double play is automatically recorded when a batter hits into one out in an inning, which isn't always correct. They overlook that there are other ways to record outs besides a double play, such as a groundout or flyout, and they also miss the fact that sometimes it takes more than one play for all three outs of an inning to be recorded.
Per OBR Rule 5.08(a), one run shall be scored each time a runner legally advances to and touches home base before three men are put out to end the inning. Exception: A run is not scored if the runner advances to home during a play in which the thi...
— Rule 5.08
Why people argue about this
People often assume that a runner only needs to touch home plate without being tagged; they forget about the requirement of having three outs first. The confusion arises because in baseball, runs are scored after all players on the opposing team have been put out, not just when the runner touches home. It's easy to overlook this crucial detail.
A home run occurs when a batter hits a fair ball over the outfield fence in flight. Per OBR Definitions (Home Run), the batter is awarded home base and all runners on base also score.
Why people argue about this
People often assume that a home run is automatically called just because the ball clears the fence, forgetting that it has to be over the outfield fence in flight for it to count. The confusion arises because they overlook the critical aspect of the ball having to clear the fence while still in play and not already touching or being held by any player on their team.
, a run that scores without the benefit of an error or passed ball. An unearned run is charged to the pitcher only if it would not have scored but for a fielding error or passed ball.
— Rule 9.16
Why people argue about this
People often assume that an earned run is only scored when the batter hits a home run, forgetting that it can also be due to errors by fielders or walks — actually, any run scored against the pitcher where he's held accountable for some reason (like a hit or walk) counts as earned. The confusion arises because they overlook the broader definition of what constitutes an earned run in baseball.
If the score is tied at the end of nine innings, additional innings are played until a winner is determined. Per OBR Rule 7.01, starting in the 2020 season (COVID-shortened season) and adopted permanently for the 2023 season onward, MLB uses the "...
— Rule 7.01
Why people argue about this
People often assume that if a game is tied after nine innings in baseball, it's just going to keep playing until one team scores more runs, but actually, there are tiebreakers involved like extra pitching rotations or even coin tosses for who gets to bat first, adding layers of complexity and confusion.
Per OBR Rule 9.01, the Official Scorer shall observe the game from a position in the press box and shall have sole authority to make all decisions involving judgment, such as whether a batter's advance to first base is the result of a hit or an er...
— Rule 9.01
Why people argue about this
People often assume that the Official Scorer's decisions are final and don't question them, which can lead to misunderstandings. However, the truth is that while they have sole authority for judgment calls like whether a hit or error occurred, their decisions aren’t always accepted without scrutiny from other officials if there’s any doubt.
Per OBR Rule 7.01, a regulation game consists of nine innings, unless extended because of a tie score, or shortened because the home team needs none of its half of the ninth inning or only a fraction of it, or because of weather or other causes. A...
— Rule 7.01, Rule 7.02
Why people argue about this
People often assume that a regulation game in MLB is always nine innings long, forgetting about potential extensions due to ties, weather delays, or needing only part of an inning. They overlook the specific conditions under which games can be shortened or extended beyond nine innings, leading to misunderstandings and arguments over game lengths.
Per OBR Rule 6.02(a), it is a balk when a pitcher, while in contact with the pitcher's plate, commits any of the following acts (among others): Makes any motion associated with a pitch without actually delivering the pitch.; Fakes a throw to first or third base while in contact with the pitcher's...
— Rule 6.02
Why people argue about this
People often assume that a balk only happens when the pitcher makes an obvious move like throwing their arm up in frustration at another player. They forget that it can be something as subtle as moving their feet or body to throw off a batter's timing, which isn't always immediately visible and thus leads to arguments about whether a call was fair or not.
Per OBR Rule 6.02(b), an illegal pitch is a pitch delivered while the pitcher's pivot foot is not in contact with the pitcher's plate (when no runners are on base). The penalty is a ball added to the count.
— Rule 6.02
Why people argue about this
People often think that an illegal pitch only happens when a runner is on base, forgetting that Rule 6.02(b) applies regardless of runners being present, which leads to confusion about when it actually occurs and why it matters in game situations.
Per OBR Rule 6.01, interference is an act by the team at bat that impedes, hinders, or confuses any fielder attempting to make a play.
— Rule 6.01
Why people argue about this
People often assume that interference only applies when a batter deliberately blocks a fielder's path, forgetting that it can also occur if they accidentally get in the way or distract during critical moments like stealing second base. The confusion arises because the rule is quite broad and subjective, leaving room for different interpretations of what exactly constitutes "impeding.
Per OBR Rule 6.01(h), obstruction is the act of a fielder who, while not in possession of the ball and not in the act of fielding the ball, impedes the progress of any runner.
— Rule 6.01
Why people argue about this
People often think that obstruction only applies when a player deliberately trips an opponent, forgetting that it can happen accidentally if they move in front of a runner without intending to impede them. The confusion arises because the rule doesn't specify intent; it focuses on whether the fielder's movement impedes the runner, regardless of their state of mind.
Per OBR Rule 6.02(c), a pitcher shall not apply a foreign substance of any kind to the ball, deface the ball in any manner, deliver a shine ball, spit ball, mud ball, or emery ball, or intentionally damage or roughen the surface of the ball. Umpir...
— Rule 6.02
Why people argue about this
People often assume that using substances like spit or mud isn't strictly prohibited if they're applied in a very small amount, but actually, the rule is quite strict - it bans applying ANY foreign substance to the ball at all, regardless of quantity. There's no gray area; even a drop of saliva or a speck of dirt is considered a violation.
When the infield fly rule is in effect and the umpire declares "Infield Fly," the batter is automatically out regardless of whether the ball is caught. If a fielder intentionally drops an infield fly, the ball remains live and in play (OBR Rule 5.09(a)(12)).
— Rule 5.09
Why people argue about this
People often assume that if a batter hits a weak ground ball intended for an easy out, they can intentionally drop their bat to trigger the Infield Fly Rule. But actually, the infield fly rule only applies when the umpire declares it in effect and signals with "Infield Fly," not because of any player action like dropping a bat.
Per OBR Rule 5.09(c), an appeal is when a fielder claims a runner failed to touch a base, failed to retouch a base after a fly ball was caught, or missed home plate. An appeal must be made before the next pitch, intentional base on balls, or the infielders leave the infield after the third out.
— Rule 5.09
Why people argue about this
People often assume that an appeal is only called when a runner fails to touch a base intentionally, which leads them to miss out on understanding that it can also be made if a fielder catches a fly ball and the runner doesn't retouch home plate after touching it. The confusion arises because they overlook the specific scenarios outlined in Rule 5.09(c) where an appeal is indeed valid.
If a bat with pine tar or other material extending more than 18 inches (45.72 cm) from the knob is discovered after a home run is hit, the home run stands and the bat is removed from play (see Pine Tar Game precedent, reaffirmed in 2023 rule clari...
— Rule 6.03
Why people argue about this
People often assume that if a pine tar-covered bat extends beyond 18 inches from the knob, it's automatically disqualified, but actually, the home run stands as long as the bat is discovered after the hit, and then it gets removed from play to avoid unfair advantage. They overlook the crucial part where the discovery must happen post-hitting for this rule to apply.
Per OBR Rule 8.04, umpires are authorized to eject any player, manager, or coach who commits objectionable acts, including but not limited to: arguing balls and strikes, using offensive language, inciting spectators, or refusing to comply with ump...
— Rule 8.04
Why people argue about this
People often think that ejections are only for blatant acts of disrespect like throwing a punch or using obscene language, but they misunderstand that it can also apply to persistent arguing about calls, even if those calls aren't blatantly wrong. They forget that the rule covers any "objectionable act," which includes arguments over umpire decisions, not just physical altercations.
MLB mandates specific protective equipment for all players in active game situations under OBR Rule 3.09 and supplementary league rules: Batting helmets: All batters, on-deck batters, and baserunners must wear an approved helmet. Helmets must meet National Operating Committee on Standards for Ath...
— Rule 3.09
Why people argue about this
People often assume that if a batter is hit by a pitch outside the strike zone, they automatically get first base just for being hit, which isn't correct. The key point of confusion here is that the batter must also attempt to avoid the ball and it can’t be in the strike zone; otherwise, the call would be a strike or ball as per normal rules.
Per OBR Rule 6.01(i), implemented in 2014 and finalized in 2015: A runner attempting to score may not deviate from the direct path to home plate in order to initiate contact with the catcher.; The catcher may not block the runner's path to home plate unless the catcher is in possession of the bal...
— Rule 6.01
Why people argue about this
People often assume that if a batter is hit by the ball at home plate, they automatically get first base just for being hit, which isn't entirely accurate. The key point of confusion here is that the batter must attempt to avoid the ball and ensure it wasn’t thrown in the strike zone; otherwise, the call could be disputed as not meeting all conditions outlined in the rule.
Per OBR Rule 6.01(j), adopted in 2016 following the Chase Utley slide incident in the 2015 postseason: A runner attempting to break up a double play must make a bona fide attempt to reach and stay on the base.; The runner must reach the base before or at the time they make contact with the fielde...
— Rule 6.01
Why people argue about this
People often assume that a batter must try to avoid the ball by sliding in order to be awarded first base after being hit by a pitch outside the strike zone. However, the actual rule states they only need to attempt to avoid it and not necessarily succeed; as long as their action shows they tried to evade, they're granted safe at first regardless of whether they actually slid or not.
Per OBR Rule 5.05(b)(2), a batter hit by a pitched ball is awarded first base, provided they attempted to avoid the ball and the pitch was not in the strike zone. The umpire has authority to issue warnings to both benches if a hit batter or other conduct suggests intentional throwing at batters.
— Rule 5.05, Rule 6.02
Why people argue about this
People often assume that if a batter is hit by a pitch outside of the strike zone, they automatically get first base just for being hit, which isn't entirely accurate. The key part they miss is that the batter must attempt to avoid the ball and it can’t be in the strike zone; otherwise, no automatic safe is awarded.
Per OBR Rule 5.10(l), each team is limited to five mound visits per nine-inning game without removing the pitcher (one additional visit is permitted for each extra inning). A visit that includes the pitcher's removal is not counted against the limit.
— Rule 5.10
Why people argue about this
People often assume that mound visits are unlimited as long as they don't involve removing the pitcher, which leads to misunderstandings about how many times a team can visit the mound without having to remove their starter. Actually, the rule caps it at five per game, with an extra allowed for each additional inning played.
Per OBR Rule 7.02 and supplementary MLB policy, all games shall be stopped if conditions make play unsafe, including lightning, severe weather, or field conditions that present a hazard. The umpire-in-chief has final authority to suspend play.
— Rule 7.02
Why people argue about this
People often assume that if a player is removed for what they perceive as a minor concussion, MLB will automatically call off the game. However, the actual rule states that players must be immediately taken out due to potential brain injury, not necessarily leading to an immediate game suspension based on individual player health decisions alone.
MLB's concussion protocol, established jointly by MLB and the MLB Players Association (MLBPA) under the CBA, requires that any player who exhibits signs, symptoms, or behaviors consistent with a concussion be immediately removed from the game. The...
Why people argue about this
People often assume that if a player is just feeling dizzy after getting hit in the head, they can stay in the game until it's their turn at bat. But actually, the rule mandates immediate removal from play if there are signs of concussion, regardless of whether the player is up to bat or not.
During enhanced foreign substance enforcement (effective June 2021), umpires conduct checks between half-innings. These checks are conducted in a respectful manner, and the Commissioner's Office has stated that the primary purpose is fair play, no...
— Rule 6.02
Why people argue about this
People often assume that these checks are a form of punishment for pitchers who might be using foreign substances, which leads them to think umpires are trying to catch cheaters. However, the official stance is that their primary goal is ensuring fair play by catching any hidden items or substances that could give an unfair advantage, not necessarily to punish.
Per OBR Rule 3.03(a), all players on a team shall wear uniforms identical in color, trim, and style. Shoes with pointed spikes similar to track or golf shoes are prohibited (Rule 3.03(b)).
— Rule 3.01, Rule 3.02, Rule 3.05, Rule 3.06, Rule 3.07, Rule 3.09, Rule 3.03
Why people argue about this
People often assume that the uniform color requirement is just about looking alike, so they argue it's too strict or unnecessary. But actually, the rule ensures a level playing field by preventing visual distractions to players on the field and maintaining consistent team aesthetics across different venues.
Per OBR Rule 2.01, the playing field is laid out per the Official Baseball Rules diagram. The infield is a 90-foot (27.432 m) square, with bases at each corner.
— Rule 2.01, Rule 2.02, Rule 2.04, Rule 2.05, Rule 2.06, Rule 2.07, Rule 4.05
Why people argue about this
People often assume that the Official Baseball Rules diagram is a literal blueprint for constructing stadiums, which leads them to think they need to build their own field exactly as depicted. However, the rule actually means teams are supposed to have a playing area that adheres to these guidelines, not necessarily replicate every detail of the diagram in their specific venue design.
Per OBR Rule 4.01, a regulation game is played between two teams of nine players each. Each team's manager must deliver to the umpire-in-chief and the opposing manager a batting order containing each starting player's name and position at least 5 ...
— Rule 4.01, Rule 5.10, Rule 5.11, Rule 8.01, Rule 8.02, Rule 8.04, Rule 4.05
Why people argue about this
People often assume that a regulation game in MLB requires 18 players total on both teams combined, which is why they argue about it. Actually, each team should have exactly nine players, leading to the common misconception that two full teams are needed for a regulation game.
Per Rule 5.07(b), the pitch is considered delivered when the pitcher's arm passes the hip in the forward swing. , a pitch delivered from an illegal position, a quick pitch, or a pitch while in an illegal position) result in a ball being awarded to the batter, or, with runners on base, a balk.
— Rule 5.01, Rule 5.07, Rule 5.04, Rule 5.09, Rule 5.05, Rule 5.02
Why people argue about this
People often assume that a pitch is only considered delivered when the ball leaves the pitcher's hand, forgetting about the follow-through part of the throw. However, under Rule 5.07(b), it’s actually the point where the pitcher’s arm passes their hip during the forward swing that determines delivery, not necessarily the release of the ball itself.
Per OBR Rule 5.08(a), one run shall be scored each time a runner legally advances to and touches home base before three men are put out to end the inning. Exception: A run is not scored if the runner advances to home during a play in which the thi...
— Rule 5.08, Rule 9.16, Rule 7.01, Rule 9.01, Rule 7.02
Why people argue about this
People often assume that scoring a run is as simple as a runner touching home plate, forgetting that they must also ensure three outs are made for the inning to end. The confusion arises because they overlook the critical aspect of needing both the score and play conditions to align perfectly - ensuring not only the run but also the game's progression towards its conclusion.
Per OBR Rule 6.02(a), it is a balk when a pitcher, while in contact with the pitcher's plate, commits any of the following acts (among others): Makes any motion associated with a pitch without actually delivering the pitch.; Fakes a throw to first or third base while in contact with the pitcher's...
— Rule 6.02, Rule 6.01, Rule 5.09, Rule 3.02, Rule 6.03, Rule 8.04
Why people argue about this
People often assume that a balk only happens when the pitcher is moving their feet in an unusual way, forgetting that it can occur simply by standing still if they commit certain illegal actions like looking at the scoreboard or talking to the catcher while on the mound. The confusion arises because they overlook the broader definition of what constitutes a "move" under OBR Rule 6.02(a).
MLB mandates specific protective equipment for all players in active game situations under OBR Rule 3.09 and supplementary league rules: Batting helmets: All batters, on-deck batters, and baserunners must wear an approved helmet. Helmets must meet National Operating Committee on Standards for Ath...
— Rule 3.09, Rule 6.01, Rule 5.05, Rule 6.02, Rule 5.10, Rule 7.02
Why people argue about this
People often assume that a batter must physically touch the ball to be awarded first base for being hit by it, which is incorrect. The real issue lies in whether the batter attempted to avoid the pitch and if the pitch was outside the strike zone; these are the key points of interpretation that can lead to confusion.