Oakland Athletics pitcher Sonny Gray wipes his head in the third inning of a baseball game against the Washington Nationals, Saturday, May 10, 2014, in Oakland, Calif. (AP Photo/Ben Margot)
Washington Nationals' Kevin Frandsen swings for a two-run double off Oakland Athletics' Sonny Gray in the third inning of a baseball game Saturday, May 10, 2014, in Oakland, Calif. (AP Photo/Ben Margot)
Oakland Athletics' Josh Donaldson swings for an RBI single off Washington Nationals' Rafael Soriano in the ninth inning of a baseball game Saturday, May 10, 2014, in Oakland, Calif. (AP Photo/Ben Margot)
Oakland Athletics' John Jaso celebrates after making the game-winning hit against the Washington Nationals in the 10th inning of a baseball game Saturday, May 10, 2014, in Oakland, Calif. (AP Photo/Ben Margot)
Washington Nationals' Doug Fister, left, walks back to the mound after giving up a home run to Oakland Athletics' John Jaso, right, in the third inning of a baseball game on Friday, May 9, 2014, in Oakland, Calif. (AP Photo/Ben Margot)
Washington Nationals' Doug Fister (58) hands the ball to manager Matt Williams as Fister is removed from the baseball game against the Oakland Athletics in the fifth inning Friday, May 9, 2014, in Oakland, Calif. (AP Photo/Ben Margot)
Oakland Athletics' Brandon Moss, front right, is congratulated by teammate Josh Donaldson (20) hitting a two-run home run off Washington Nationals' Doug Fister in the fifth inning of a baseball game on Friday, May 9, 2014, in Oakland, Calif. (AP Photo/Ben Margot)