After 13 incredible seasons with the San Francisco 49ers, and many recent months of consideration, it is with very mixed emotions that I am announcing my retirement from the NFL. The game of football has been a true passion of mine since I was 8, but my body is telling me it is time.

Football is a physical sport and I have given my all to the game and pushed my limits. Last season was a dream to be a part of, having the opportunity to chase a Championship. But, it was by far the most difficult on me and my family. My body was breaking down with a variety of injuries and a deteriorating neck condition, and the constant discomfort affected every aspect of my life.