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From Ben Maller: "Guitar video game injured Tigers pitcher?":

[Joel] Zumaya, 22, was known to play "Guitar Hero," a PlayStation 2 game in which a player uses a guitar-shaped controller to simulate the performance of popular songs.

During the radio interview, [Dave] Dombrowski said the Tigers' athletic training staff discovered that Zumaya's forearm pain was more consistent with the action of a guitar player than a baseball pitcher. The Tigers asked Zumaya to stop playing the video game, and he did. Zumaya then pitched pain-free during the World Series, and went 0-1 with a 3.00 ERA in three appearances.

Stick to Halo, Joel. Better yet, stay in shape with DDR.