San Francisco Giants' Tim Lincecum works against the Houston Astros in the first inning of a baseball game Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

Houston Astros shortstop Jed Lowrie, third from left, is helped off the field by trainers after suffering an injury to his leg in the third inning of a baseball game against the San Francisco Giants Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Hector Sanchez connects for an RBI double off Houston Astros' Fernando Abad in the sixth inning of a baseball game Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

Houston Astros second baseman Jose Altuve, left, prepares to complete a double play over San Francisco Giants' Gregor Blanco (7) in the sixth inning of a baseball game Saturday, July 14, 2012, in San Francisco. Giants' Ryan Theriot was out at first base. (AP Photo/Ben Margot)

Houston Astros' Justin Maxwell (44) scores past San Francisco Giants catcher Hector Sanchez in the ninth inning of a baseball game, Saturday, July 14, 2012, in San Francisco. Maxwell scored on a wild pitch from Giants' Santiago Casilla. (AP Photo/Ben Margot)

San Francisco Giants' Hector Sanchez swings for the game winning hit off Houston Astros' Brett Myers in the 12th inning of a baseball game, Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Pablo Sandoval reacts after scoring the game winning run against the Houston Astros in the 12th inning of a baseball game, Saturday, July 14, 2012, in San Francisco. Sandoval scored on a hit by Giants' Hector Sanchez. (AP Photo/Ben Margot)

Houston Astros' Lucas Harrell works against the San Francisco Giants in the first inning of a baseball game Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

Houston Astros' Lucas Harrell works against the San Francisco Giants in the first inning of a baseball game Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Hector Sanchez, right, is mobbed by teammates including Joaquin Arias (13) after Sanchez made the game winning hit off Houston Astros' Brett Myers in the 12th inning of a baseball game, Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Hector Sanchez, left, and Pablo Sandoval celebrate after Sanchez made the game winning hit off Houston Astros' Brett Myers in the 12th inning of a baseball game Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Melky Cabrera swings for an RBI single off Houston Astros' Lucas Harrell in the fifth inning of a baseball game Saturday, July 14, 2012, in San Francisco. (AP Photo/Ben Margot)

FILE - This July 14, 2012 file photo shows San Francisco Giants' Melky Cabrera swinging for an RBI single off Houston Astros' Lucas Harrell in the fifth inning of a baseball game in San Francisco. Cabrera has been suspended for 50 games without pay after testing positive for testosterone. The commissioner's office says the suspension is effective immediately. Major League Baseball said on Wednesday, Aug. 15, 2012, that Cabrera tested positive for the banned performance-enhancing substance, which violates MLB's joint drug prevention and treatment program.(AP Photo/Ben Margot, File)

FILE - This July 14, 2012 file photo shows San Francisco Giants' Melky Cabrera swinging for an RBI single off Houston Astros' Lucas Harrell in the fifth inning of a baseball game in San Francisco. A person familiar with the discussions tells The Associated Press that Cabrera has been disqualified from the National League batting title at his own request. The person says Cabrera asked the players' association to convey his desire to the commissioner's office and that an agreement to make him ineligible was reached Friday, Sept. 21, 2012. The person spoke on condition of anonymity because no announcement had been made. (AP Photo/Ben Margot, File)

Foto de archivo del 14 de julio de 2012 del jugador dominicano de los Gigantes de San Francisco, Melky Cabrera. Cabrera, suspendido por dopaje, pidió ser descalificado de la lucha por el título de bateo de la Liga Nacional el viernes, 21 de septiembre de 2012. (AP Photo/Ben Margot, File)