Patrick Willis Explains Decision to Retire from NFL
Patrick Willis' retirement a jarring one for 49ers – Times Herald Online
Patrick Willis Explains Decision to Retire from NFL
Patrick Willis retires: 'There's more to football than this'
49ers' Patrick Willis retires 'happy' – The Mercury News
Patrick Willis still thriving after early 49ers retirement
Patrick Willis Explains Decision to Retire from NFL
49ers announce Patrick Willis is retiring - NBC Sports
Concussion concerns changing the landscape of the NFL - Silver And Black Pride
49ers news: Patrick Willis says he would have retired if the Niners and Jim Harbaugh's relationship didn't fall apart - Niners Nation
Ex-49ers LB Patrick Willis reflects on decision to retire: 'It was the right time' : r/nfl
Willis retirement hits 49ers in the gut – SFBay
49ers' Patrick Willis retires 'happy' – The Mercury News