Chris Borland retirement - Outside the Lines (March 17, 2015)
Chris Borland to retire from NFL, fearing concussions
Chris Borland's Early NFL Exit Doesn't Mean Avoiding Brain Damage, Experts Say - ABC News
NFL rookie Chris Borland on retiring over concussion concerns
Has there been another NFL player that was very talented that retired at an earlier age than Andrew Luck? - Quora
Chris Borland's retirement at age 24 may mean big trouble for the NFL - The Washington Post
Youth Football Risks: Report says sport linked to early brain disease - Sports Illustrated
Is fear of injury pushing NFL players like Borland out?
Is Chris Borland's Retirement The Beginning Of The End For, 55% OFF
Is Chris Borland's Retirement The Beginning Of The End For, 48% OFF
NFL star Chris Borland quits over head injury concerns - CBS News
Chris Borland Comments on Concussions, Retirement and More, News, Scores, Highlights, Stats, and Rumors