Chicago Cubs shortstop Starlin Castro, right, deflects a ball hit by St. Louis Cardinals' Jason Heyward for a single as Cubs second baseman Addison Russell, left, backs up Castro during the fourth inning of a baseball game Thursday, May 7, 2015, in St. Louis.
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See images from the Cubs' 5-1 loss against the St. Louis Cardinals at Busch Stadium Thursday.
Cubs have no answer for Cardinals' Lackey, fall 5-1
St. Louis Cardinals starting pitcher John Lackey throws during the first inning of a baseball game against the Chicago Cubs Thursday, May 7, 2015, in St. Louis.
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Chicago Cubs starting pitcher Jake Arrieta throws during the first inning of a baseball game against the St. Louis Cardinals Thursday, May 7, 2015, in St. Louis.
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St. Louis Cardinals' Peter Bourjos, right, is safe at third for an RBI triple as Chicago Cubs third baseman Kris Bryant handles the throw during the second inning of a baseball game Thursday, May 7, 2015, in St. Louis.
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St. Louis Cardinals' Peter Bourjos watches his RBI triple during the second inning of a baseball game against the Chicago Cubs Thursday, May 7, 2015, in St. Louis.
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Fans watch as a foul ball hit by St. Louis Cardinals' Kolten Wong heads their way during the third inning of a baseball game against the Chicago Cubs Thursday, May 7, 2015, in St. Louis.
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St. Louis Cardinals starting pitcher John Lackey throws during the sixth inning of a baseball game against the Chicago Cubs Thursday, May 7, 2015, in St. Louis.
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St. Louis Cardinals catcher Yadier Molina, left, pumps his fist as Chicago Cubs' Welington Castillo stands at the plate after Castillo was called out on strikes to end a baseball game Thursday, May 7, 2015, in St. Louis. The Cardinals won 5-1.
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