COMMERCIAL IMAGE - In this photo taken by AP Images for Dick's Sporting Goods, Sidney Meyer , 7, of Edina, Minn. tries on a hat signed by Former Minnesota Vikings quarterback Brad Johnson at Dick's ... more 
COMMERCIAL IMAGE - In this photo taken by AP Images for Dick's Sporting Goods, Sidney Meyer , 7, of Edina, Minn. tries on a hat signed by Former Minnesota Vikings quarterback Brad Johnson at Dick's Sporting Goods in Richfield, Minn., Friday, Aug. 19, 2011. Former Super Bowl champion Johnson is at Dick's Sporting Goods promoting PACE (Protecting Athletes through Concussion Education), an initiative to increase awareness about the dangers of concussions. To sign up your local high school or middle school to receive baseline concussion testing software visit www.mydickssportinggoods.com/pace. (Craig Lassig/APImages for Dick's Sporting Goods) less 
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Associated Press
Fri, Aug 19, 2011 7:53 PM EDT