Patrick Willis NFL Memorabilia, Patrick Willis Collectibles, Verified Signed Patrick Willis Photos
Patrick Willis Says Change 'Must' Happen After 49ers Loss
From His First to Last, Patrick Willis Remembers His 49ers HOF Career
Chris Borland's retirement: Is an NFL player's brain really more important than his feet?
49ers LB Patrick Willis retiring after injury-shortened season – New York Daily News
49ers great Patrick Willis named Pro Football Hall of Fame finalist – NBC Sports Bay Area & California
Report: Former Ole Miss great Patrick Willis to retire
49ers linebacker Patrick Willis retiring after injury-shortened season
49ers Patrick Willis retiring after injury-shortened season – The Denver Post
Chris Borland, Fearing for Health, Retires From the 49ers. At 24. - The New York Times
49ers' Patrick Willis isn't in the Hall of Fame and is too busy to care - ESPN - San Francisco 49ers Blog- ESPN