Patrick Willis' Shock Retirement Marks Official End of Jim Harbaugh-Era 49ers, News, Scores, Highlights, Stats, and Rumors
49ers' Patrick Willis retires after injury-shortened season
Patrick Willis of San Francisco 49ers retires - ESPN
49ers' Patrick Willis retires 'happy' – The Mercury News
Enlightened K.J. Wright paces through 9th Seahawks camp
49ers' Patrick Willis retires 'happy' – The Mercury News
Patrick Willis Explains Decision to Retire from NFL
49ers' Patrick Willis retires 'happy' – The Mercury News
New Orleans Saints Media Guide 2009, PDF, New Orleans
Why would an NFL star retire when he can still play? Patrick Willis explains why he walked away in his prime
Patrick Willis Retired in His Prime, But Where is He Now? - FanBuzz
Patrick Willis still thriving after early 49ers retirement
Patrick Willis Explains Decision to Retire from NFL