Brandon Mccarthy

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Arizona Diamondbacks starting pitcher Brandon McCarthy looks down after Chicago Cubs' Mike Olt hit a three-run home run during the fifth inning of a baseball game in Chicago, Tuesday, April 22, 2014. (AP Photo/Paul Beaty)

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Arizona Diamondbacks starter Brandon McCarthy delivers a pitch during the first inning of a baseball game against the Chicago Cubs in Chicago, Tuesday, April 22, 2014. (AP Photo/Paul Beaty)

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Arizona Diamondbacks' Brandon McCarthy, right, adjusts his cap after talking with teammates, including Cliff Pennington (4), on the mound during the sixth inning of a baseball game against the New York Mets, Wednesday, April 16, 2014, in Phoenix. (AP Photo/Ross D. Franklin)

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Arizona Diamondbacks' Brandon McCarthy throws a pitch against the Los Angeles Dodgers during the sixth inning of a baseball game Friday, April 11, 2014, in Phoenix. (AP Photo/Ross D. Franklin)

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Arizona Diamondbacks' Brandon McCarthy shouts into his shirt after giving up an RBI single to Los Angeles Dodgers' Adrian Gonzalez during the eighth inning of a baseball game Friday, April 11, 2014, in Phoenix. The Dodgers won 6-0. (AP Photo/Ross D. Franklin)

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Arizona Diamondbacks' Brandon McCarthy (32) looks at a new baseball as Los Angeles Dodgers' Adrian Gonzalez (23) rounds the bases after he hit a 2-run home run during the first inning of a baseball game on Friday, April 11, 2014, in Phoenix. (AP Photo/Ross D. Franklin)

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Arizona Diamondbacks starting pitcher Brandon McCarthy throws in the first inning of a baseball game against the Colorado Rockies on Saturday, April 5, 2014, in Denver. (AP Photo/Chris Schneider)

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Arizona Diamondbacks pitcher Brandon McCarthy throws against the Chicago White Sox in the fifth inning during an exhibition baseball game in Glendale, Ariz., Saturday, March 8, 2014. (AP Photo/Paul Sancya)

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FILE - In this Sept. 5, 2012, file hoto, Oakland Athletics catcher Derek Norris, left, comes to the aid of pitcher Brandon McCarthy (32) who was hit in the head by a ball hit by Los Angeles Angels' Erick Aybar in the fourth inning of a baseball game in Oakland, Calif. Major League Baseball has approved a protective cap for pitchers, hoping to reduce the effects of being hit in the head by line drives. (AP Photo/Ben Margot, File)