The NFL's concussion protocol was followed after Dolphins quarterback Tua Tagovailoa suffered an injury against the Buffalo Bills last month, the NFL and NFL Players Association concluded in a joint investigation. The parties released a joint statement on their findings Saturday. "The outcome in this case was not what was intended when the protocol was drafted," the statement said. As a result, the NFL and NFLPA agreed to modify the league's concussion protocol, adding the term "ataxia," to the mandatory "no-go" symptoms. In the statement, they defined ataxia as "abnormality of balance/stability, motor coordination or dysfunctional speech caused by a neurological issue." If a player is diagnosed with ataxia by the team or other neutral physician, that player will immediately be ruled out of the game and will receive follow-up care. In the first half of the Week 2 game on Sept. 25 against the Buffalo Bills, Tagovailoa took a hit from Bills linebacker Matt Milano, which caused him to sla
