The Miami Dolphins clarified that the quarterback was "conscious and has movement in all his extremities" after a scary incident.
There were concerns about players wearing white while on their periods.
Mississippi-native Davis Riley enjoyed a bogey-free opening day while some of the pre-tournament favourites struggled including J.T. Poston.
Antonio Conte is in no rush to agree to a new contract at Tottenham, but insists he remains happy in north London.