Report: 49ers LB Patrick Willis has surgery on fractured hand
Patrick Willis injury: San Francisco 49ers' linebacker will have season-ending toe surgery, placed on injured reserve - Sports Illustrated
49ers' Patrick Willis lost for season (w/video)
Patrick Willis, Tramaine Brock injuries: Considering medical implications of turf toe - Niners Nation
49ers LB Patrick Willis retiring after injury-shortened season – New York Daily News
Patrick Willis retiring from 49ers after injury-shortened season, NFL
49ers lose LB Willis for season
49ers' Patrick Willis retires after injury-shortened season
Patrick Willis retiring from 49ers after injury-shortened season, NFL
Injuries mount in Bears come from behind win
49ers LB Patrick Willis retiring after injury-shortened season – New York Daily News