A penalty shot, where a player from the non-offending team is given an attempt to score a goal without opposition from any defending players except the goaltender, may be awarded under certain circumstances. By rule, teams must have at least three runners in play. If a team commits a third penalty resulting in a "three man down" situation a penalty shot is awarded in favor of having the offending player serve in the penalty box. A penalty shot may also be awarded, at the referee's discretion, if a defensive player causes a foul to prevent a goal (by throwing his stick, holding, tripping, or by deliberately displacing the goal, or a defensive player intentionally falls and covers a ball in his own team's crease). In the NLL, a penalty shot is awarded against any team taking a too-many-men penalty in the final two minutes of the game or overtime.