Chris Borland is a former American football linebacker who played for the San Francisco 49ers. He is one of the first NFL players to retire from professional football early in his career due to concerns over head injuries inherent to the sport.
Chris Borland is a former American football linebacker who played for the San Francisco 49ers. He is one of the first NFL players to retire from professional football early in his career due to concerns over head injuries inherent to the sport.