Milwaukee Brewers pitcher Wily Peralta reacts after giving up a two-run home run to Chicago Cubs' Anthony Rizzo, during the sixth inning of a baseball game Saturday, May 31, 2014, in Milwaukee. (AP Photo/Darren Hauck)
Chicago Cubs pitcher Jason Hammel pitches to the Milwaukee Brewers during the first inning of a baseball game Saturday, May 31, 2014, in Milwaukee. (AP Photo/Darren Hauck)
Chicago Cubs catcher John Baker hits an RBI single against the Milwaukee Brewers during the sixth inning of a baseball game Saturday, May 31, 2014, in Milwaukee. (AP Photo/Darren Hauck)
Chicago Cubs catcher Welington Castillo, right, cannot handle the throw as Milwaukee Brewers' Rickie Weeks scores during the third inning of a baseball game on Friday, May 30, 2014, in Milwaukee. (AP Photo/Morry Gash)
Milwaukee Brewers' Ryan Braun hits a two-run home run during the first inning of a baseball game against the Chicago Cubs, Friday, May 30, 2014, in Milwaukee. (AP Photo/Morry Gash)
San Francisco pitcher George Kontos throws to the Chicago Cubs during the sixth inning of a baseball game, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)
San Francisco Giants' Brandon Crawford (35) and Angel Pagan celebrate after a baseball game in which the Giants defeated the Chicago Cubs 5-0, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)
San Francisco pitcher Tim Lincecum reacts after finishing the fifth inning of a baseball game against the Chicago Cubs, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)
San Francisco Giants' Pablo Sandoval lifts his leg upon advancing tho second base on a wild pitch during the fourth inning of a baseball game against the Chicago Cubs, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)
San Francisco Giants' Buster Posey looks at his bat after striking out, next to Chicago Cubs catcher John Baker during the first inning of a baseball game, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)
Chicago Cubs pitcher Edwin Jackson throws to the San Francisco Giants during the first inning of a baseball game, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)
Chicago Cubs pitcher Edwin Jackson throws to the San Francisco Giants during the first inning of a baseball game, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)
San Francisco pitcher Tim Lincecum throws to the Chicago Cubs during the first inning of a baseball game, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)
San Francisco Giants' Pablo Sandoval watches his RBI single against the Chicago Cubs during the sixth inning of a baseball game, Wednesday, May 28, 2014, in San Francisco. (AP Photo/George Nikitin)