According to Friday's official injury report, there are only three players in the National Football League not currently suffering from some form of concussion. 'Of 1,696 players, only Chiefs lineman Ryan O'Callaghan, Texans kicker Neil Rackers, and Seahawks quarterback Matt Hasselbeck show no symptoms of concussion at this time,' the report read in part. 'Commissioner Roger Goodell will hold a press conference to discuss this matter as soon as he recovers from the concussion he suffered in week four.' As of press time, all NFL games were going ahead as scheduled. 