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Minnesota Vikings head coach Mike Zimmer instructs defensive tackle Linval Joseph during an NFL football training camp, Saturday, July 26, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)
Minnesota Vikings head coach Mike Zimmer instructs defensive tackle Linval Joseph during an NFL football training camp, Saturday, July 26, 2014, in Mankato, Minn....
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)
Colorado Rockies' Charlie Culberson, right, throws his bat after being called out on strikes as Chicago Cubs catcher Welington Castillo celebrates during the...
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Cleveland Indians' Carlos Santana, right, hugs teammate Asdrubal Cabrera (13) at home plate after hitting a two-run home run in the fifth inning of a baseball game against the Kansas City Royals at Kauffman Stadium in Kansas City, Mo., Thursday, July 24, 2014. (AP Photo/Colin E. Braley)
Cleveland Indians' Carlos Santana, right, hugs teammate Asdrubal Cabrera (13) at home plate after hitting a two-run home run in the fifth inning of a baseball...
In this June 19, 2014, file photo, chef Alex Tretter carries a tray of cannabis-infused peanut butter and jelly cups to the oven for baking at Sweet Grass Kitchen, a well-established Denver-based gourmet marijuana edibles bakery which sells its confections to retail outlets throughout the state. Colorado marijuana regulators have drafted an emergency rule aimed at making it easier for new marijuana users to tell how much pot they are eating. (AP Photo/Brennan Linsley, File)
In this June 19, 2014, file photo, chef Alex Tretter carries a tray of cannabis-infused peanut butter and jelly cups to the oven for baking at Sweet Grass...
Actor and music artist L.L. Cool J, left, talks with Def Jam co-founder Russell Simmons on a visit to speak with youth at the juvenile detention center of Rikers Island, Thursday, July 31, 2014, in New York. Simmons, founder of the RushCard Keep the Peace initiative, was accompanied by L.L. Cool J to the detention center to offer advice to the inmates on reducing violence in their neighborhoods. (AP Photo/Julie Jacobson)
Actor and music artist L.L. Cool J, left, talks with Def Jam co-founder Russell Simmons on a visit to speak with youth at the juvenile detention center of Rikers...
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Detroit Lions head coach Jim Caldwell talks after NFL football training camp in Allen Park, Mich., Tuesday, July 29, 2014. (AP Photo/Paul Sancya)
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Tiger Woods watches his chip to the fourth hole, during the first round of the Bridgestone Invitational golf tournament, Thursday, July 31, 2014, in Akron, Ohio....
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Chicago White Sox shortstop Alexei Ramirez (10) and Adam Eaton (1) celebrate their 7-4 win against the Detroit Tigers after a baseball game in Detroit,  Thursday, July 31, 2014. (AP Photo/Paul Sancya)
Chicago White Sox shortstop Alexei Ramirez (10) and Adam Eaton (1) celebrate their 7-4 win against the Detroit Tigers after a baseball game in Detroit, Thursday,...
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