Patrick Willis still thriving after early 49ers retirement
49ers' Patrick Willis isn't in the Hall of Fame and is too busy to care - ESPN - NFL Nation- ESPN
Patrick Willis Explains Decision to Retire from NFL
Might ex-49ers star Patrick Willis come out of retirement?
49ers' Patrick Willis retires 'happy' – The Mercury News
Patrick Willis closes door on return, discusses foot issues as reason for retirement - Niners Nation
49ers LB Patrick Willis retiring after injury-shortened season – New York Daily News
Lowell Cohn: 49ers defense takes a huge hit
Patrick Willis' retirement a jarring one for 49ers – Times Herald Online