The Life And Career Of Patrick Willis (Story)
49ers Patrick Willis retiring after injury-shortened season – The Denver Post
Linebacker Patrick Willis Retires - The Source
San Francisco 49ers: Who Will Replace Patrick Willis and Chris Borland?, News, Scores, Highlights, Stats, and Rumors
49ers in flux as Patrick Willis, Justin Smith retire - Sports Illustrated
49ers Alumnus Patrick Willis to Be Inducted into Bay Area Sports Hall of Fame
Patrick Willis Explains Decision to Retire from NFL
49ers LB Patrick Willis retiring
NFL Star Patrick Willis Now Working in Silicon Valley
49ers: 5 former players who could come out of retirement to play
Patrick Willis social media post appears to announce retirement - Niners Nation