49ers LB Patrick Willis retiring after injury-shortened season – New York Daily News
Patrick Willis to undergo season-ending toe surgery
Why would an NFL star retire when he can still play? Patrick Willis explains why he walked away in his prime
Patrick Willis Explains Decision to Retire from NFL
49ers LB Patrick Willis retiring after injury-shortened season – New York Daily News
49ers LB Patrick Willis' toe injury will require season-ending surgery
Reinjured Big Toe Ends Season for 49ers' Patrick Willis - The Washington Informer
49ers LB Patrick Willis retiring after injury-shortened season – New York Daily News
Patrick Willis retiring from 49ers after injury-shortened season, NFL
Patrick Willis says his feet carried him away from the game
49ers' Patrick Willis retires 'happy' – The Mercury News