Rule 10 – Section 2 – Article 7 – Special Enforcement of Post-Possession Fouls
In extra periods or during a try, fouls after a change of team possession have special enforcement.
a. Penalties against either team are declined by rule. (Exception: Penalties for flagrant personal fouls, unsportsmanlike conduct fouls, dead-ball personal fouls and live-ball fouls treated as dead-ball fouls are enforced on the succeeding play.)
b. A score by a team committing a foul during the down is cancelled. (Exception: Live-ball foul treated as a dead-ball foul.) (A.R. 8-3-2:VII)
c. If both teams foul during the down and Team B had not fouled before the change of possession, the fouls cancel and the down is not repeated. On a try, the try is over.