Calvin Pryor was the first player to suffer a concussion in 2014. Since then 34 others have all suffered from a concussion as well.
So far in the NFL preseason, Pryor and thirty-four other players have been diagnosed with or been reported to have concussions, according to the @NFLConcussions Twitter feed. According to Forbes magazine The
@NFLConcussions feed has been tracking head injuries across the league for several years, and has emerged as an authoritative source.