Washington Nationals pitcher Gio Gonzalez takes a breath on the mound in between batters in the top of the fifth inning. (Rod Lamkey Jr./The Washington Times)
Washington Nationals pitcher Gio Gonzalez walks through the dugout after ending the inning as the Washington Nationals host the New York Mets at Nationals Park. (Rod Lamkey Jr./The Washington Times)
Washington Nationals' Michael Morse follows through on a grand slam during the fourth inning of a baseball game against the New York Mets at Nationals Park on Friday, Aug. 17, 2012, in Washington. The Nationals won 6-4. (AP Photo/Alex Brandon)
Washington Nationals' Michael Morse, center, celebrates his grand slam during the fourth inning of a baseball game against the New York Mets at Nationals Park on Friday, Aug. 17, 2012, in Washington. The Nationals won 6-4. (AP Photo/Alex Brandon)
Washington Nationals' Danny Espinosa, right, celebrates after hitting a two-run home run off of San Francisco Giants pitcher Tim Lincecum to score Adam LaRoche (25) during the third inning of a baseball game in San Francisco, Wednesday, Aug. 15, 2012. (AP Photo/Jeff Chiu)
Washington Nationals pitcher Jordan Zimmermann works against the San Francisco Giants in the first inning of a baseball game Tuesday, Aug. 14, 2012, in San Francisco. (AP Photo/Ben Margot)
Washington Nationals pitcher Gio Gonzalez throws to the San Francisco Giants during the first inning of a baseball game, Monday, Aug. 13, 2012, in San Francisco, Calif. (AP Photo/George Nikitin)
Washington Nationals' Ryan Zimmerman (11) cannot catch the throw as Arizona Diamondbacks' Paul Goldschmidt (44) steals third base during the second inning of a baseball game, Sunday, Aug. 12, 2012, in Phoenix. (AP Photo/Matt York)
Washington Nationals' Bryce Harper, right, and his fellow teamates are congratulated by the coaching staff following their 9-1 victory over the Arizona Diamondbacks during a baseball game on Friday, Aug. 10, 2012, in Phoenix. (AP Photo/Ralph Freso)