Patrick Willis' retirement a jarring one for 49ers – Times Herald Online
Q&A: Rashard Mendenhall on life as an early NFL retiree
Report: 49ers expect Patrick Willis to retire
Retired 49ers LB Patrick Willis is now just another Silicon Valley tech geek
49ers' Patrick Willis retires 'happy' – The Mercury News
49ers' Patrick Willis retires 'happy' – The Mercury News
49ers' Patrick Willis retires 'happy' – The Mercury News
Patrick Willis still thriving after early 49ers retirement
Patrick Willis: Decision to retire was about his health and heart