Chicago Cubs' Anthony Rizzo, left, is safe at home after knocking the ball out of the glove of St. Louis Cardinals catcher Yadier Molina, right, during the second inning of a baseball game on Wednesday, June 19, 2013, in St. Louis. (AP Photo/Jeff Roberson)

Chicago Cubs' Anthony Rizzo, right, is safe at home as he knocks the ball out of the glove of St. Louis Cardinals catcher Yadier Molina during the second inning of a baseball game on Wednesday, June 19, 2013, in St. Louis. (AP Photo/Jeff Roberson)

Chicago Cubs starting pitcher Edwin Jackson throws during the first inning of a baseball game against the St. Louis Cardinals, Wednesday, June 19, 2013, in St. Louis. (AP Photo/Jeff Roberson)

St. Louis Cardinals starting pitcher Jake Westbrook throws during the first inning of a baseball game against the Chicago Cubs, Wednesday, June 19, 2013, in St. Louis. (AP Photo/Jeff Roberson)

Chicago Cubs' Anthony Rizzo, right, is safe at home while colliding with St. Louis Cardinals catcher Yadier Molina during the second inning of a baseball game on Wednesday, June 19, 2013, in St. Louis. The ball popped out of Molina's glove on the play. (AP Photo/Jeff Roberson)

St. Louis Cardinals' Matt Carpenter, left, is safe at home as he is hit in the back by the throw as Chicago Cubs catcher Welington Castillo, right, and home plate umpire Adrian Johnson, center, watch during the first inning of a baseball game on Wednesday, June 19, 2013, in St. Louis. (AP Photo/Jeff Roberson)

ST. LOUIS, MO - JUNE 19: Starter Jake Westbrook #35 of the St. Louis Cardinals pitches against the Chicago Cubs at Busch Stadium on June 19, 2013 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)

ST. LOUIS, MO - JUNE 19: Starter Jake Westbrook #35 of the St. Louis Cardinals pitches against the Chicago Cubs at Busch Stadium on June 19, 2013 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)

ST. LOUIS, MO - JUNE 19: Starter Edwin Jackson #36 of the Chicago Cubs pitches against the St. Louis Cardinals at Busch Stadium on June 19, 2013 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)

ST. LOUIS, MO - JUNE 19: Anthony Rizzo #44 of the Chicago Cubs flips the ball to first base for an out against the St. Louis Cardinals in the second inningat Busch Stadium on June 19, 2013 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)

ST. LOUIS, MO - JUNE 19: Matt Carpenter #13 of the St. Louis Cardinals scores a run against the Chicago Cubs in the first inning at Busch Stadium on June 19, 2013 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)

ST. LOUIS, MO - JUNE 19: Allen Craig #21 of the St. Louis Cardinals hits an RBI single against the Chicago Cubs in the first inning at Busch Stadium on June 19, 2013 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)

ST. LOUIS, MO - JUNE 19: Starter Edwin Jackson #36 of the Chicago Cubs pitches against the St. Louis Cardinals at Busch Stadium on June 19, 2013 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)

Tampa Bay Rays starting pitcher Alex Cobb grabs his head and lies on the pitcher's mound after being hit by a line drive by Kansas City Royals' Eric Hosmer during the fifth inning of a baseball game Saturday, June 15, 2013, in St. Petersburg, Fla. Cobb was taken off the field on a stretcher. (AP Photo/Brian Blanco)

Tampa Bay Rays second baseman Ben Zobrist (18) come sin to comfort Kansas City Royals' Eric Hosmer (35) as they watch medial personnel treat Rays starting pitcher Alex Cobb after Cobb was hit by a line drive by Hosmer during the fifth inning of a baseball game Saturday, June 15, 2013, in St. Petersburg, Fla. Cobb was taken off the field on a stretcher. (AP Photo/Brian Blanco)

Tampa Bay Rays catcher Jose Lobaton, left, and left fielder Kelly Johnson, center, rush in to assist starting pitcher Alex Cobb as Cobb grabs his head and lies on the pitcher's mound after being hit by a line drive by Kansas City Royals' Eric Hosmer during the fifth inning of a baseball game Saturday, June 15, 2013, in St. Petersburg, Fla. Cobb was taken off the field on a stretcher. (AP Photo/Brian Blanco)

Chicago Cubs' Ryan Sweeney hits a two-run home run during the first inning of a baseball game against the St. Louis Cardinals on Tuesday, June 18, 2013, in St. Louis. (AP Photo/Jeff Roberson)

St. Louis Cardinals starting pitcher Adam Wainwright, left, watches as a solo home run by Chicago Cubs' Cody Ransom, right, clears the left field wall during the first inning of a baseball game on Tuesday, June 18, 2013, in St. Louis. (AP Photo/Jeff Roberson)

Chicago Cubs starting pitcher Jeff Samardzija throws during the first inning of a baseball game against the St. Louis Cardinals on Tuesday, June 18, 2013, in St. Louis. (AP Photo/Jeff Roberson)

Chicago Cubs' Alfonso Soriano hits an RBI-double during the first inning of a baseball game against the St. Louis Cardinals on Tuesday, June 18, 2013, in St. Louis. (AP Photo/Jeff Roberson)

Chicago Cubs third baseman Luis Valbuena leaps for a high bounce off the bat of St. Louis Cardinals' Pete Kozma in the third inning of a baseball game on Tuesday, June 18, 2013, in St. Louis. (AP Photo/St. Louis Post-Dispatch, Chris Lee)

Chicago Cubs' Ryan Sweeney, right, is congratulated by manager Dale Sveum, center, as he returns to the dugout after hitting a two-run home run in the first inning of a baseball game against the St. Louis Cardinals on Tuesday, June 18, 2013, in St. Louis. (AP Photo/St. Louis Post-Dispatch, Chris Lee)

St. Louis Cardinals' Shane Robinson stands on second after being called out by second base umpire Fieldin Culbreth, left, at the end of a baseball game against the Chicago Cubs on Tuesday, June 18, 2013, in St. Louis. The Cubs won 4-2. (AP Photo/Jeff Roberson)

Chicago Cubs relief pitcher Kevin Gregg reacts after the final out in a baseball game against the St. Louis Cardinals on Tuesday, June 18, 2013, in St. Louis. The Cubs won 4-2. (AP Photo/Jeff Roberson)

Chicago Cubs shortstop Starlin Castro, bottom, misses a ball hit by St. Louis Cardinals' Matt Holliday for a single as Cubs left fielder Alfonso Soriano watches during the ninth inning of a baseball game on Tuesday, June 18, 2013, in St. Louis. (AP Photo/Jeff Roberson)

St. Louis Cardinals manager Mike Matheny, right, talks with starting pitcher Adam Wainwright during the seventh inning of a baseball game against the Chicago Cubs on Tuesday, June 18, 2013, in St. Louis. (AP Photo/Jeff Roberson)

St. Louis Cardinals first round draft pick Rob Kaminsky speaks to the media at Busch Stadium before the start of a baseball game between the St. Louis Cardinals and the Chicago Cubs on Tuesday, June 18, 2013, in St. Louis. Kaminsky, a left-handed pitcher, was taken 28th overall by the Cardinals in the 2013 draft. (AP Photo/St. Louis Post-Dispatch, Chris Lee)

St. Louis Cardinals' Carlos Beltran, right, rounds the bases after hitting a solo home run off Chicago Cubs starting pitcher Jeff Samardzija, left, during the sixth inning of a baseball game on Tuesday, June 18, 2013, in St. Louis. (AP Photo/Jeff Roberson)

ST. LOUIS, MO - JUNE 18: Carlos Beltran #3 of the St. Louis Cardinals is congratulated after hitting a solo home run against the Chicago Cubs in the sixth inning at Busch Stadium on June 18, 2013 in St. Louis, Missouri. The Cubs beat the Cardinals 4-2. (Photo by Dilip Vishwanat/Getty Images)

ST. LOUIS, MO - JUNE 18: Manager Mike Matheny #22 of the St. Louis Cardinals argues a call for the final out of the game with umpire Fieldin Culbreth #25 as the Chicago Cubs celebrate a victory at Busch Stadium on June 18, 2013 in St. Louis, Missouri. The Cubs beat the Cardinals 4-2. (Photo by Dilip Vishwanat/Getty Images)