Former Ole Miss star Patrick Willis expected to retire from 49ers
49ers Patrick Willis Retiring
Patrick Willis on NaVorro Bowman's injury recovery, Richard Sherman and Jim Harbaugh's intensity
Linebacker Patrick Willis is ready to retire, even though he's only 30 – The Denver Post
Patrick Willis - Wikipedia
49ers Patrick Willis retiring after injury-shortened season – The Denver Post
Team Preview: San Francisco 49ers - NFL - ESPN
Early retirement: Willis called it quits in his prime
Chris Borland's retirement: Is an NFL player's brain really more important than his feet?
49ers linebacker Patrick Willis retiring after injury-shortened season
49ers LB Patrick Willis taken out of St. Louis game with toe injury - Sports Illustrated
Ex-49ers star Patrick Willis reflects on making team's hall of fame
San Francisco linebacker Patrick Willis announces his retirement - The Globe and Mail
Patrick Willis has found success at a Silicon Valley tech start-up - NBC Sports
San Francisco 49ers linebacker Patrick Willis will retire