Patrick Willis Reflects on His Storied 49ers Career
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Why would an NFL star retire when he can still play? Patrick
Roster Reset: San Francisco 49ers last in NFC West
Patrick Willis Career Highlights: 49ers Linebacker Retires with
The San Francisco 49ers' Elite: Rating the Top 25 Niners of All
Former 49ers TE Delanie Walker Announces NFL Retirement
Trade History: An abundance of deal lead to the 49ers success in
Patrick Willis Explains Decision to Retire from NFL
Patrick Willis, American Football Wiki