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Starting pitcher Pedro Hernandez #43 of the Colorado Rockies delivers a pitch during the first inning against the Chicago Cubs at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452979590 )

Justin Ruggiano #20 of the Chicago Cubs follows through on a sacrifice fly scoring teammate Chris Coghlan during the sixth inning against the Colorado Rockies at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452984128 )

Colorado Rockies second baseman D.J. LeMahieu, right, throws out Chicago Cubs' Starlin Castro at first base after forcing out Anthony Rizzo at second base during the first inning of a baseball game in Chicago, Thursday, July 31, 2014. (AP Photo/Nam Y. Huh) ( Rockies Cubs Baseball )

Second baseman D. J. LeMahieu #9 of the Colorado Rockies forces out Anthony Rizzo #44 of the Chicago Cubs at second base and throws to first to complete a double play on a ground ball hit by Starlin Castro during the first inning at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452979608 )

Center fielder Junior Lake #21 of the Chicago Cubs fails to catch a single hit by Wilin Rosario #20 of the Colorado Rockies during the fifth inning at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452983000 )

Anthony Rizzo #44 of the Chicago Cubs (L) slides into second baseman D.J. LeMahieu #9 of the Colorado Rockies to break up a double play on a ground ball hit by Starlin Castro during the fourth inning at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452983014 )

Wilin Rosario #20 of the Colorado Rockies hits a single during the fifth inning to break up a perfect game being thrown by starting pitcher Jake Arrieta #49 of the Chicago Cubs at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452983024 )

Anthony Rizzo #44 of the Chicago Cubs slides into second baseman D.J. LeMahieu #9 of the Colorado Rockies to break up a double play on a ground ball hit by Starlin Castro during the fourth inning at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452983028 )

Arismendy Alcantara #7 of the Chicago Cubs (L) beats the throw to first baseman Justin Morneau #33 of the Colorado Rockies for an infield single during the sixth inning at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452984134 )

Catcher Wilin Rosario #20 of the Colorado Rockies (L) talks with starting pitcher Pedro Hernandez #43 during the sixth inning against the Chicago Cubs at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452984136 )

Chris Coghlan #8 of the Chicago Cubs (R) fist bumps teammate Justin Ruggiano #20 after Coghlan scored on a sacrifice fly hit by Ruggiano during the sixth inning against the Colorado Rockies at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452984138 )

Shortstop Charlie Culberson #23 of the Colorado Rockies (L) turns a double play after forcing out Chris Coghlan #8 of the Chicago Cubs at second base on a ground ball hit by Starlin Castro during the eighth inning at Wrigley Field on July 31, 2014 in Chicago, Illinois. (Photo by Brian Kersey/Getty Images) ( 452984446 )

Starlin Castro #13 of the Chicago Cubs and teammate Junior Lake #21 (R) celebrate their win over the Colorado Rockies at Wrigley Field on July 31, 2014 in Chicago, Illinois. The Cubs defeated the Rockies 3-1. (Photo by Brian Kersey/Getty Images) ( 452985074 )

Catcher Welington Castillo #5 of the Chicago Cubs hugs relief pitcher Hector Rondon #56 after their game against the Colorado Rockies at Wrigley Field on July 31, 2014 in Chicago, Illinois. The Cubs defeated the Rockies 3-1. (Photo by Brian Kersey/Getty Images) ( 452985076 )

Carlos Gonzalez #5 of the Colorado Rockies breaks his bat as he hits into a fielder's choice during the ninth inning against the Chicago Cubs at Wrigley Field on July 31, 2014 in Chicago, Illinois. The Cubs defeated the Rockies 3-1. (Photo by Brian Kersey/Getty Images) ( 452985084 )

Colorado Rockies second baseman Charlie Culberson (23), top, throws out Chicago Cubs' Starlin Castro at first base after forcing out Chris Coghlan (8) at second base during the eighth inning of a baseball game in Chicago, Thursday, July 31, 2014. (AP Photo/Nam Y. Huh) ( Rockies Cubs Baseball )

Colorado Rockies' Charlie Culberson, front, throws his helmet after being called out on strikes during the ninth inning of a baseball game against the Chicago Cubs in Chicago, Thursday, July 31, 2014. The Cubs won 3-1. (AP Photo/Nam Y. Huh) ( Rockies Cubs Baseball )

Chicago Cubs starter Jake Arrieta throws against the Colorado Rockies during the first inning of a baseball game in Chicago, Thursday, July 31, 2014. (AP Photo/Nam Y. Huh) ( Rockies Cubs Baseball )

Chicago Cubs shortstop Starlin Castro catches a ground ball hit by Colorado Rockies' D.J. LeMahieu during the sixth inning of a baseball game in Chicago, Thursday, July 31, 2014. (AP Photo/Nam Y. Huh) ( Rockies Cubs Baseball )

Colorado Rockies' Charlie Culberson, right, throws his bat after being called out on strikes as Chicago Cubs catcher Welington Castillo celebrates during the ninth inning of a baseball game in Chicago, Thursday, July 31, 2014. The Cubs won 3-1. (AP Photo/Nam Y. Huh) ( Rockies Cubs Baseball )

Colorado Rockies third baseman Nolan Arenado (28) can' t make the play on a single hit by Chicago Cubs' Arismendy Alcantara during the sixth inning of a baseball game in Chicago, Thursday, July 31, 2014. (AP Photo/Nam Y. Huh) ( Rockies Cubs Baseball )