Coincidental penalties

Coincidental (or “matching”) minor penalties occur when an equal number of players from each team are given a minor penalty at the same time. The permission of a substitute player depends on the league and the situation at the time of the infractions. In some leagues, such as the NHL, the teams will play four-on-four for the duration of the penalties if they occurred when both teams were at even strength.

However, if there is already a manpower differential, then both teams are allowed to make substitutions while the penalized players will remain in the penalty box until the first stoppage in play after their penalty expires. In other competitions, such as IIHF events, coincidental penalties do not affect manpower in any situation. Coincidental minor penalties are not ended when a goal is scored by either team.