He is the finishing pitcher in a game won by his team He is not the winning pitcher He is credited with at least ⅓ of an inning pitched He satisfies one of the following conditions: -He enters the game with a lead of no more than three runs and pitches for at least one inning -He enters the game, regardless of the count, with the potential tying run either on base, at bat or on deck -He pitches for at least three innings