Chicago Cubs' Justin Germano pitches against the Pittsburgh Pirates during the first inning of a baseball game Monday, July 30, 2012, in Chicago. (AP Photo/Jim Prisching)

Pittsburgh Pirates catcher Michael McKenry watches as Chicago Cubs' Anthony Rizzo follows through on a three-run home run during the fifth inning of a baseball game, Monday, July 30, 2012, in Chicago. (AP Photo/Jim Prisching)

Chicago Cubs' Darwin Barney watches his three-run home run against the Pittsburgh Pirates during the fourth inning of a baseball game, Monday, July 30, 2012, in Chicago. (AP Photo/Jim Prisching)

Pittsburgh Pirates' Michael McKenry, left, and Pedro Alvarez, right, watch as pitcher Erik Bedard tosses the ball in the air after giving up a three-run home run to Chicago Cubs' Anthony Rizzo during the fifth inning of a baseball game, Monday, July 30, 2012, in Chicago. (AP Photo/Jim Prisching)

Pittsburgh Pirates catcher Michael McKenry reacts as Chicago Cubs' Reed Johnson (5) and Starlin Castro (13) congratulate Anthony Rizzo after his three-run home run during the fifth inning of a baseball game, Monday, July 30, 2012, in Chicago. (AP Photo/Jim Prisching)

Pittsburgh Pirates' Drew Sutton (17) reacts after striking out against the Chicago Cubs after a baseball game, Monday, July 30, 2012, in Chicago. The Cubs won 14-4. (AP Photo/Jim Prisching)

Chicago Cubs' David DeJesus, rear, rounds third base as Pittsburgh Pirates' Chris Resop (30) reacts after giving up a two-run home run to Chicago Cubs' Starlin Castro during the fifth inning of a baseball game, Monday, July 30, 2012, in Chicago. (AP Photo/Jim Prisching)

Chicago Cubs' Casey Coleman pitches against the Pittsburgh Pirates during the first inning of a baseball game Tuesday, July 31, 2012, in Chicago. (AP Photo/Jim Prisching)

Pittsburgh Pirates' Garrett Jones (46) and Travis Snider right, congratulate Neil Walker (18) after his grand slam against the Chicago Cubs during the first inning of a baseball game Tuesday, July 31, 2012, in Chicago. (AP Photo/Jim Prisching)

Pittsburgh Pirates' A.J. Burnett pitches against the Chicago Cubs during the first inning of a baseball game Tuesday, July 31, 2012, in Chicago. (AP Photo/Jim Prisching)

Pittsburgh Pirates' Neil Walker rounds second base after hitting a grand slam against the Chicago Cubs during the first inning of a baseball game Tuesday, July 31, 2012, in Chicago. (AP Photo/Jim Prisching)

Pittsburgh Pirates catcher Rod Barajas, left, hugs pitcher A.J. Burnett, who threw a one-hitter against the Chicago Cubs in a baseball game Tuesday, July 31, 2012, in Chicago. The Pirates defeated the Cubs 5-0. (AP Photo/Jim Prisching)