By Associated Press Reporter NFL linebacker Russell Allen is to retire from professional football at the age of 27 after suffering a concussion and stroke during a game in December. Allen, who lives in San Diego with his wife and two-year-old son, had been playing for Jacksonville Jaguars when he got knocked during a game against the Buffalo Bills. The footballer wasn't knocked unconscious, but he had blurred vision for the rest of the game and a pounding headache the following morning. Game over: A head injury has forced Russell Allen to retire from the Jacksonville Jaguars Allen has what he described as a dead spot, no bigger than a dime, on his cerebellum which controls motor movement and coordination.
@highlight
Russell Allen was injured while playing against Buffalo Bills last year
@highlight
Jacksonville Jaguars player had double vision and headache during game
The @placeholder released Allen last week after his personal physician consulted with the team's medical staff before a scheduled physical.
The @placeholder declined to comment on Tuesday, citing medical privacy laws.