FILE - In this May 30, 2009, file photo, New England Revolution's Taylor Twellman reacts to a missed scoring opportunity against D.C. United during the first half of an MLS soccer game at Gillette ... more 
FILE - In this May 30, 2009, file photo, New England Revolution's Taylor Twellman reacts to a missed scoring opportunity against D.C. United during the first half of an MLS soccer game at Gillette Stadium in Foxborough, Mass. Since his college days, Twellman has had seven diagnosed concussions. Given all the headers and hits over his career, he's wondering if that number might even be drastically higher. less 
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Associated Press | Photo By Winslow Townson, File
Tue, Oct 12, 2010 1:52 PM EDT