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Innings pitched

In baseball, innings pitched (IP) are the number of innings a pitcher has completed, measured by the number of batters and runners that are put out while the pitcher is in the game. Three outs made is equal to one inning pitched. One out counts as one-third of an inning, and two outs counts as two-thirds of an inning. Sometimes, the statistic is written 34.1, 72.2, or 91.0, for example, to represent 34 and 1/3 innings, 72 and 2/3 innings, and 91 innings exactly, respectively.