Oakland Athletics

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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)

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Oakland Athletics pitcher Jerry Blevins pumps his fist at the end of a baseball game against the Minnesota Twins, Saturday, Sept. 21, 2013, in Oakland, Calif. The Athletics won 9-1. (AP Photo/George Nikitin)

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Oakland Athletics relief pitcher Jerry Blevins (13) delivers during a baseball game against the Pittsburgh Pirates in Pittsburgh Wednesday, July 10, 2013. (AP Photo/Gene J. Puskar)

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Oakland Athletics relief pitcher Jerry Blevins throws to the Los Angeles Angels during a baseball game in Anaheim, Calif., Wednesday, April 10, 2013. (AP Photo/Chris Carlson)

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Oakland Athletics relief pitcher Jerry Blevins celebrates his team's 6-5 win against the Los Angeles Angels after a baseball game in Anaheim, Calif., Tuesday, Sept. 11, 2012. (AP Photo/Jae C. Hong)

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Baltimore Orioles' Nate McLouth stands on the bag after stealing second base against the Oakland Athletics in a baseball game, Saturday, Aug. 24, 2013 in Baltimore.(AP Photo/Gail Burton)

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Detroit Tigers third baseman Miguel Cabrera laughs near Oakland Athletics first baseman Brandon Moss in the first inning of Game 2 of an American League baseball division series in Oakland, Calif., Saturday, Oct. 5, 2013. (AP Photo/Ben Margot)

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Detroit Tigers pitcher Max Scherzer throws against the Oakland Athletics in the first inning of a baseball game in Detroit, Thursday, Aug. 29, 2013. (AP Photo/Paul Sancya)