Patrick Wilson Announces Retirement
49ers' Patrick Willis retires 'happy' – The Mercury News
Patrick Willis Explains Decision to Retire from NFL
Might ex-49ers star Patrick Willis come out of retirement?
Report: 49ers expect Patrick Willis to retire
5 Takeaways from Patrick Willis' Explosive Week 16 Performance
Patrick Willis Says Change 'Must' Happen After 49ers Loss
49ers LB Patrick Willis retiring after injury-shortened season
49ers LB Patrick Willis retiring after injury-shortened season
San Francisco 49ers: Patrick Willis credits Bruceton, Tennessee
Patrick Willis' retirement a jarring one for 49ers – Times Herald
Patrick Willis retiring from 49ers after injury-shortened season