Did NFL legend Patrick Willis just hint at a comeback?
49ers' Willis is Hawaii-bound – East Bay Times
Patrick Willis: Justin Smith has plenty to ponder this offseason
NFL Players who retired too soon (Part 1 of 2)
NFL: 49ers, close in 2011, even better now – Orange County Register
At last, BASHOF-bound ex-49er Patrick Willis can delight in his career
49ers vs. Eagles: Tale of the tape for NFC championship came
Retired 49ers LB Patrick Willis denies report of 2016 comeback
Chris Borland, Michael Wilhoite in the spotlight with Patrick Willis, NaVorro Bowman injuries - Niners Nation
San Francisco 49ers - Wikipedia
Patrick Willis, Bryant Young among ex-49ers nominated for Hall of Fame – NBC Sports Bay Area & California
Former 49er Patrick Willis Claims Silicon Valley Dream Shattered by Fraud : r/nfl
Gould's FG on final play gives 49ers 13-10 upset of Packers