It was not the first time he sustained a concussion during his career, but being left suffering with physical symptoms such as noise and light sensitivity, plus balance issues and tiredness during the day alerted him to the fact this was something serious.Signing out✌https://t.co/X9Qg0jQbB9 Please use Chrome browser for a more accessible video player Please use Chrome browser for a more accessible video player Jackson thought he had ignited the Ravens' ensuing response with a 39-yard scramble only to be pegged back by a holding penalty, the drive eventually stalling as Baltimore failed to convert on fourth-and-seven from their own 38 with 11:43 to play.