Washington Nationals' Ryan Zimmerman walks back to the dugout after striking out against the Houston Astros during the second inning of an exhibition spring training baseball game Tuesday, March 5, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

Photo by: David J. Phillip

Washington Nationals' Ryan Zimmerman walks back to the dugout after striking out against the Houston Astros during the second inning of an exhibition spring training baseball game Tuesday, March 5, 2013, in Viera, Fla. (AP Photo/David J. Phillip)