Pittsburgh Pirates relief pitcher Mark Melancon (35) is greeted by catcher Chris Stewart after getting the last out in the ninth inning of the baseball game against the San Francisco Giants on Wednesday, May 7, 2014, in Pittsburgh. The Pirates won 4-3. (AP Photo/Keith Srakocic)
Pittsburgh Pirates' Andrew McCutchen, right, is greeted by teammates after scoring in the first inning of the baseball game against the San Francisco Giants on Wednesday, May 7, 2014, in Pittsburgh. (AP Photo/Keith Srakocic)
San Francisco Giants' Brandon Belt, left, rounds the bases past Pittsburgh Pirates second baseman Neil Walker after hitting a home run in the first inning of a baseball game on Wednesday, May 7, 2014, in Pittsburgh. (AP Photo/Keith Srakocic)
Pittsburgh Pirates' Andrew McCutchen (22) drives in Travis Snider with a hit in the first inning of a baseball game against the San Francisco Giants on Wednesday, May 7, 2014, in Pittsburgh. (AP Photo/Keith Srakocic)
Pittsburgh Pirates' Travis Snider is greeted by teammates in the dugout after scoring on a base hit by Andrew McCutchen in the first inning of the baseball game against the San Francisco Giants on Wednesday, May 7, 2014, in Pittsburgh. (AP Photo/Keith Srakocic)
San Francisco Giants starting pitcher Tim Lincecum (55) throws against the Pittsburgh Pirates in the first inning of a baseball game on Wednesday, May 7, 2014, in Pittsburgh. (AP Photo/Keith Srakocic)
Pittsburgh Pirates' Gerrit Cole (45) throws against the San Francisco Giants in the first inning of a baseball game on Wednesday, May 7, 2014, in Pittsburgh. (AP Photo/Keith Srakocic)