Patrick Willis of San Francisco 49ers retires - ESPN
San Francisco 49ers: Who Will Replace Patrick Willis and Chris Borland?, News, Scores, Highlights, Stats, and Rumors
Linebacker Patrick Willis is ready to retire, even though he's only 30 – The Denver Post
Future Hall of Fame LB Patrick Willis now Silicon Valley exec
Retired 49ers LB Patrick Willis denies report of 2016 comeback
NFL star Patrick Willis is thriving in retirement as a Silicon Valley tech worker
Patrick Willis' Shock Retirement Marks Official End of Jim Harbaugh-Era 49ers, News, Scores, Highlights, Stats, and Rumors
49ers great Patrick Willis starts surprising new career in retirement
49ers' Patrick Willis isn't in the Hall of Fame and is too busy to care - ESPN - NFL Nation- ESPN
Patrick Willis has found success at a Silicon Valley tech start-up - NBC Sports
NFL Star Patrick Willis Now Working in Silicon Valley
Patrick Wilson Announces Retirement
Did 49ers legend Patrick Willis just hint at an NFL comeback?