Training camp roundup: 49ers linebacker Patrick Willis has 'slight
Patrick Willis set for MRI on toe - NBC Sports
NFLAnyEra: No. 7 49ers LB Patrick Willis - ESPN
Patrick Willis - Wikipedia
Chris Borland, Fearing for Health, Retires From the 49ers. At 24
Patrick Willis sidelined with toe injury - NBC Sports
Patrick Willis' intensity fuels the San Francisco 49ers' success
San Francisco 49ers: Why Patrick Willis Is Team's Most Important
Patrick Willis Says Change 'Must' Happen After 49ers Loss
Patrick Willis Speaks On the Toughness of Marshawn Lynch, His Best
ESPN poll has 49ers' Fred Warner on top of the NFL world - A to Z
Patrick Willis of San Francisco 49ers retires - ESPN
The Life And Career Of Patrick Willis (Story)
Concussion Concern: LB Retires After One NFL Season