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Many will remember Joel Zumaya for ending up on the DL for a sore wrist from playing too much Guitar Hero but he had one of the hardest fastballs in the history of baseball.
According to Fangraphs, Zumaya's average speed on his fastball was 98.5 mph and the last two seasons he pitched, 2009 and 2010, he averaged a speed of 99.3 mph.
Zumaya has had a number of injuries the past few seasons and recently had to have Tommy John surgery in 2012 as a member of the Minnesota Twins. His career stats currently sit at 13-12 with a 3.05 ERA but as Paul Wilson showed, it is very hard to come back.
Some surgeries, like Tommy John, are especially tough for pitchers and to come back throwing as hard as they did prior to the injury.
The reason he made this list was because of how short his career is and his struggles to stay healthy. Joel Zumaya still has a chance to turn it around, though, if he can come back from surgery, but he may have to change his pitching style to be effective.