San Francisco Giants starting pitcher Ryan Vogelsong throws to the Washington Nationals during the first inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants' Pablo Sandoval singles against the Washington Nationals during the third inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
Washington Nationals' Ian Desmond hits a double to score Ryan Zimmerman during the first inning of a baseball game against the San Francisco Giants in San Francisco, Tuesday, May 21, 2013. (AP Photo/Jeff Chiu)
Colorado Rockies manager Walt Weiss, left, congratulates shortstop Troy Tulowitzki after Rockies' 5-0 victory over the San Francisco Giants in a baseball game in Denver on Sunday, May 19, 2013. (AP Photo/David Zalubowski)
San Francisco Giants pitcher Matt Cain throws against the Washington Nationals during the first inning of a baseball game in San Francisco, Tuesday, May 21, 2013. (AP Photo/Jeff Chiu)
San Francisco Giants' Andres Torres drives in a run with a double against the Washington Nationals during the second inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants' Gregor Blanco, right, scores past Washington Nationals catcher Kurt Suzuki (24) during the second inning of a baseball game in San Francisco, Tuesday, May 21, 2013. (AP Photo/Jeff Chiu)
Washington Nationals starting pitcher Zach Duke throws to the San Francisco Giants during the first inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
Washington Nationals starting pitcher Zach Duke throws to the San Francisco Giants during the first inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
Washington Nationals pitcher Stephen Strasburg throws during the first inning of a baseball game against the San Francisco Giants in San Francisco, Tuesday, May 21, 2013. (AP Photo/Jeff Chiu)
Washington Nationals shortstop Ian Desmond (20) forces out San Francisco Giants' Andres Torres (56) at second base after a ground ball from Brandon Crawford during the fourth inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants' Brandon Belt singles during the seventh inning of a baseball game against the Washington Nationals on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
Washington Nationals' Stephen Lombardozzi waits on deck to bat during the third inning of a baseball game against the San Francisco Giants on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants' Hunter Pence, right, is chased by Washington Nationals catcher Jhonatan Solano in a rundown between home plate and third base after a ground ball by Brandon Crawford during the seventh inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
From left, San Francisco Giants' Gregor Blanco, Angel Pagan and Hunter Pence celebrate a 8-0 win over the Washington Nationals during a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants' Brandon Belt is congratulated by third base coach Tim Flannery after his solo home run during the fifth inning of a baseball game against the Washington Nationals on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants starting pitcher Ryan Vogelsong throws to the Washington Nationals during the first inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants' Brandon Belt, left, scores after a sacrifice bunt from Ryan Vogelsong next to Washington Nationals catcher Jhonatan Solano (23) during the fourth inning of a baseball game on Monday, May 20, 2013 in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants starting pitcher Ryan Vogelsong grabs his hand after being hit by a pitch against the Washington Nationals during the fifth inning of a baseball game on Monday, May 20, 2013 in San Francisco. Vogelsong left the game after the game. (AP Photo/Marcio Jose Sanchez)
