Washington Nationals' Tyler Moore is cheered in the dugout after hitting a home run in the third inning of a baseball game against the Philadelphia Phillies, Friday, May 2, 2014, in Philadelphia. (AP Photo/Laurence Kesterson)
Washington Nationals' Adam LaRoche (25) celebrates with Anthony Rendon (6) after the Nationals defeated the Houston Astros 4-3 in a baseball game Tuesday, April 29, 2014, in Houston. (AP Photo/David J. Phillip)
Houston Astros pitcher Brett Oberholtzer walks to the dugout after being taken out of the game during the fifth inning against the Washington Nationals, Wednesday, April 30, 2014, in Houston. (AP Photo/Patric Schneider)
Houston Astros pitcher Brett Oberholtzer throws during the first inning of a baseball game against the Washington Nationals, Wednesday, April 30, 2014, in Houston. (AP Photo/Patric Schneider)
Washington Nationals third baseman Anthony Rendon fields a ball during the eighth inning of a baseball game against the Houston Astros, Wednesday, April 30, 2014, in Houston. (AP Photo/Patric Schneider)
Washington Nationals' Denard Span hits a triple and scores on a fielding error by Houston Astros right fielder George Springer during the third inning of a baseball game, Wednesday, April 30, 2014, in Houston. (AP Photo/Patric Schneider)
Washington Nationals' Adam LaRoche (25) watches a single that scored Denard Span during the ninth inning of a baseball game, in front of Houston Astros catcher Jason Castro on Tuesday, April 29, 2014, in Houston. (AP Photo/David J. Phillip)