A one-inning "reliever" in Major League Baseball will typically throw between 5 and 20 pitches in a game. How many warm up pitches does he need before he can do this?
Said reliever is allowed up to eight "practice" pitches from the mound (except in the case of an unexpected injury, when the reliever gets as many pitches as he needs). So how many pitches might the reliever have thrown in the bullpen before being called into a game?