Oakland Athletics

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Boston Red Sox's John Lackey delivers a pitch against the Oakland Athletics in the first inning of a baseball game on Sunday, May 4, 2014, in Boston. (AP Photo/Steven Senne)

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Oakland Athletics' Josh Donaldson, bottom, slides home to score on a hit by Yoenis Cespedes as Boston Red Sox catcher A.J. Pierzynski, top, waits for the ball in the sixth inning of a baseball game, Sunday, May 4, 2014, in Boston. (AP Photo/Steven Senne)

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Boston Red Sox's David Ortiz, left, looks toward home plate umpire umpire Mark Ripperger, right, as he strikes out in the first inning of a baseball game against the Oakland Athletics, Sunday, May 4, 2014, in Boston. (AP Photo/Steven Senne)