Super fight: 10 minutes (single period); Title fight: 12 minutes (single period); If tied: judge decision (no overtime golden-score)
Why people argue about this
People often assume that if a match goes into overtime (beyond 10 or 12 minutes), it's decided by judges rather than extended time. But actually, in Submission Grappling under ONE Championship rules, matches go to overtime and continue until one competitor taps out (submits) or the referee declares a winner due to exhaustion or injury, regardless of how long they've been going.
