MILWAUKEE, WI - MAY 20: Zack Greinke #13 of the Milwaukee Brewers pitches against the Colorado Rockies at Miller Park on May 20, 2011 in Milwaukee, Wisconsin. The Brewers defeated the Rockies

Milwaukee Brewers' Zack Greinke throws during a spring training baseball workout, Friday, Feb. 17, 2012, in Phoenix. (AP Photo/Morry Gash Stock Photo - Alamy

Milwaukee Brewers starting pitcher Zack Greinke throws during the first inning of a baseball game against the Colorado Rockies Tuesday, Sept. 13, 2011, in Milwaukee. (AP Photo/Morry Gash Stock Photo - Alamy

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MILWAUKEE, WI - MAY 20: Zack Greinke #13 of the Milwaukee Brewers pitches against the Colorado Rockies at Miller Park on May 20, 2011 in Milwaukee, Wisconsin. The Brewers defeated the Rockies

MILWAUKEE, WI - MAY 20: Zack Greinke #13 of the Milwaukee Brewers pitches against the Colorado Rockies at Miller Park on May 20, 2011 in Milwaukee, Wisconsin. The Brewers defeated the Rockies

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MILWAUKEE, WI - AUGUST 28: Zack Greinke #13 of the Milwaukee Brewers pitches during the game against

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MILWAUKEE, WI - MAY 20: Zack Greinke #13 of the Milwaukee Brewers pitches against the Colorado Rockies at Miller Park on May 20, 2011 in Milwaukee, Wisconsin. The Brewers defeated the Rockies

Shelby Miller - Wikipedia