Population 639 international rugby players representing 20 countries ... Players diagnosed with confirmed concussion followed a 5-stage graduated-return-to-play protocol before being allowed to return ...

The Toronto Raptors say RJ Barrett has entered concussion protocols after a hard fall Sunday night against the Los Angeles ...

25–27 In professional male rugby union in England, clinicians’ evaluations of athletes who have sustained a head injury with the potential to result in concussion are supported by a standardised head ...

Rookie running back Ray Davis remains in the NFL concussion protocol but was a limited participant at Wednesday's practice. The league defines limited participation as a player who takes less than ...