San Francisco Giants starting pitcher Matt Cain throws to the Colorado Rockies during the first inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

Colorado Rockies starting pitcher Tyler Chatwood throws to the San Francisco Giants during the first inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants starting pitcher Matt Cain throws to the Colorado Rockies during the first inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants' Marco Scutaro, right, slides into second base for a double as Colorado Rockies second baseman D.J. LeMahieu, left, grabs the throw from the outfield during the first inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants' Pablo Sandoval hits a three-run home run against the Colorado Rockies during the first inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants' Pablo Sandoval watches the flight of his three-run home run against the Colorado Rockies during the first inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants' Pablo Sandoval, right, is hugged by teammate Angel Pagan (16) after hitting a three-run home run against the Colorado Rockies during the first inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants' Buster Posey singles against the Colorado Rockies during the third inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants starting pitcher Matt Cain throws to the Colorado Rockies during the fourth inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

Colorado Rockies shortstop Josh Rutledge reaches for a ground ball from San Francisco Giants' Matt Cain during the fourth inning of a baseball game on Wednesday, Sept. 19, 2012, in San Francisco. Cain reached base for an infield single on the play. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants shortstop Brandon Crawford (35), left, makes a play on a ground ball to throw out Colorado Rockies' Matt McBride at first base during the fifth inning of a baseball game on, Wednesday, Sept. 19, 2012 in San Francisco. (AP Photo/Marcio Jose Sanchez)

Colorado Rockies second baseman D.J. LeMahieu, left, is pulled off the base by a wide throw from catcher Wilin Rosario as San Francisco Giants' Pablo Sandoval (48) steals second base during the fifth inning of a baseball game on, Wednesday, Sept. 19, 2012 in San Francisco. Sandoval advanced to third base on the throwing error. (AP Photo/Marcio Jose Sanchez)

San Francisco Giants' Gregor Blanco (7) drives in two-runs with a single against the Colorado Rockies during the fifth inning of a baseball game on, Wednesday, Sept. 19, 2012 in San Francisco. (AP Photo/Marcio Jose Sanchez)

From left, San Francisco Giants left fielder Gregor Blanco, right fielder Hunter Pence and center fielder Angel Pagan celebrate a 7-1 win over the Colorado Rockies during a baseball game on Wednesday, Sept. 19, 2012 in San Francisco. (AP Photo/Marcio Jose Sanchez)

El intermedista de los Rockies de Colorado D.J. LeMahieu, izquierda, es sacado de la base por un tiro desviado del catcher Wilin Rosario mientras Pablo Sandoval, de los Gigantes de San Francisco, se roba la base, en el quinto episodio de un partido de las mayores el miércoles, 19 de septiembre del 2012. (Foto AP/Marcio Jose Sanchez)