Washington Nationals' Ian Desmond reacts after scoring on Danny Espinosa's double during the second inning of a baseball game with the San Francisco Giants, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals' Ian Desmond (20) scores as San Francisco Giants catcher Hector Sanchez (29) cannot hang onto the throw during the second inning of a baseball game, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Jordan Zimmermann throws during the second inning of a baseball game against the San Francisco Giants at Nationals Park on Tuesday, July 3, 2012, in Washington.(AP Photo/Alex Brandon)

Washington Nationals shortstop Ian Desmond, left, waits for the throw as San Francisco Giants' Gregor Blanco (7) safely steals second during the first inning of a baseball game, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

San Francisco Giants center fielder Angel Pagan waits to play the ball off the wall from Washington Nationals' Danny Espinosa, who hit a one-RBI double, during the second inning of a baseball game, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

San Francisco Giants starting pitcher Tim Lincecum throws during the first inning of a baseball game with the Washington Nationals, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

San Francisco Giants players sit on the bench during a rain delay in the seventh inning of a baseball game with the Washington Nationals, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

Grounds crew workers roll the tarp out during a rain delay in the seventh inning of a baseball game between the Washington Nationals and San Francisco Giants, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals' Ryan Zimmerman (11) celebrates with Bryce Harper (34) and pitching coach Steve McCatty, right, after scoring during the fourth inning of a baseball game with the San Francisco Giants, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

San Francisco Giants starting pitcher Tim Lincecum watches from the bench after he was pulled in the fourth inning of a baseball game with the Washington National, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals relief pitcher Mike Gonzalez reacts after the throw during the ninth inning of a baseball game with the San Francisco Giants, Tuesday, July 3, 2012, in Washington. The Nationals won 9-3. (AP Photo/Alex Brandon)

San Francisco Giants' Melky Cabrera reacts after striking out during the fifth inning of a baseball game with the Washington Nationals, Tuesday, July 3, 2012, in Washington. (AP Photo/Alex Brandon)