Chicago Cubs' Anthony Rizzo watches his home run off St. Louis Cardinals starting pitcher Adam Wainwright during the fifth inning of a baseball game on Friday, May 2, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Chicago Cubs' Anthony Rizzo watches his home run off St. Louis Cardinals starting pitcher Adam Wainwright during the fifth inning of a baseball game on Friday, May 2, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Chicago Cubs' Anthony Rizzo hits a home run off St. Louis Cardinals starting pitcher Adam Wainwright during the fifth inning of a baseball game on Friday, May 2, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Cincinnati Reds starting pitcher Tony Cingrani, right, stands on the mound after giving up a two-run home run to Chicago Cubs' Anthony Rizzo, left, in the first inning of a baseball game on Wednesday, April 30, 2014, in Cincinnati. (AP Photo)
Chicago Cubs' Anthony Rizzo, left, is congratulated by Emilio Bonifacio after hitting a two-run home run off Cincinnati Reds starting pitcher Tony Cingrani in the first inning of a baseball game on Wednesday, April 30, 2014, in Cincinnati. (AP Photo)
Chicago Cubs' Anthony Rizzo, right, tags home plate ahead of the tag by Cincinnati Reds catcher Brayan Pena in the fifth inning of a baseball game on Wednesday, April 30, 2014, in Cincinnati. Rizzo scored on a sacrifice fly by Nate Schierholtz. (AP Photo)
Cincinnati Reds' Billy Hamilton (6) is safe at first with an infield hit as Chicago Cubs first baseman Anthony Rizzo catches the throw in the sixth inning of a baseball game, Tuesday, April 29, 2014, in Cincinnati. (AP Photo)