San Francisco - April 12, 2011: Giants Pitcher All Star Closer Brian Wilson lifts leg to throw a pitch with first baseman in view at the ATT Park. - Stock Photo & Image

OAKLAND - JULY 7: Yankee Alex Rodriguez runs to first base as Oakland A's first base man catches ball to get him out at the Coliseum in Oakland California on July 7 2010.

SAN FRANCISCO, CA - OCTOBER 19: San Francisco Giants vs. Philadelphia Phillies: Pitcher Matt Cain steps forward to throw pitch with Phillies dugout in the background, game three of the NLCS 2010 taken October 19, 2010 AT&T Park San Francisco Californ

DENVER - JULY 7: Angels pitcher Andrew Heaney steps forward to throw pitch off mound on July 7, 2015 in Denver, Colorado.

DENVER - JULY 7: Angels pitcher Andrew Heaney steps forward to throw pitch off mound on July 7, 2015 in Denver, Colorado.

SAN FRANCISCO, CA - OCTOBER 28:Giants Runner Andres Torres takes large lead from Second Base during game 2 of the 2010 World Series game between Giants and Rangers Oct. 28, 2010 AT&T Park San Francisco, CA.

Baltimore, MD - JUNE 11: Orioles pitcher Wei-Yin Chen throws ball from mound which can be seen in the airwith umpire behind him, outfielder and scoreboard June 11, 2014 in Baltimore, MD.

SAN FRANCISCO, CA - OCTOBER 19: San Francisco Giants vs. Philadelphia Phillies: Pitcher Matt Cain steps into leg to build power as he steps into a throw game three of the NLCS 2010 taken October 19, 2010 AT&T Park San Francisco California.

SAN FRANCISCO, CA - MARCH 12: CAL Pitcher throws pitch with ball in motion at ATT Park on March 12 2011 in San Francisco.

DENVER - JULY 7: Angels pitcher Andrew Heaney throws pitch to Rockies batter Troy Tulowitzki waiting on incoming pitch on July 7, 2015 in Denver, Colorado.

SAN FRANCISCO, CA - OCTOBER 19: Giants vs. Phillies: Phillies Cole Hamels lifts leg high as he sets to throw pitch game three of the NLCS 2010 taken October 19, 2010 AT&T Park San Francisco.

SAN FRANCISCO - AUGUST 12: Giants Pitch Matt Cain steps forward with arm reaching back to throw pitch on the mound in the bullpen as he warms up before game. August 12 2010 at the ATT Park San Francisco California.

SAN FRANCISCO - JULY 28 Giants Middle infielders Edgar Renteria and Freddy Sanchez stand in position waiting for play action on July 28 2010 at Att Park in San Francisco California.