Patrick Willis laid the BOOM 💥 #shorts
Reports: 49ers linebacker Patrick Willis expected to retire
Report: 49ers' Patrick Willis planning to retire
Patrick Willis Retired in His Prime, But Where is He Now? - FanBuzz
Patrick Willis Inducted Into Bay Area Hall of Fame
Is fear of injury pushing NFL players like Borland out?
Luke Kuechly Joins N.F.L.'s Under-30 Retirees Club - The New York Times
Patrick Willis retiring from 49ers after injury-shortened season, NFL
Patrick Willis Explains Decision to Retire from NFL
NFL notable players who retired early: Ali Marpet joins list of those who stepped away in their prime