Bell: Young retirees should draw NFL's concern
Chris Borland retires from NFL at just 24 years old, makes his own sense of head injuries – New York Daily News
Retiring 49er Chris Borland to pay back NFL signing bonus - Sports Illustrated
49ers LB Chris Borland won't be last to retire early for safety reasons - Sports Illustrated
Wisconsin Football: Badgers Focus on Life Beyond Football
Twenty-Four-Year-Old 49ers Linebacker Retires, Citing Fears of Brain Injury, East Bay Express
Chris Borland Retires from NFL at Age 24: Latest Details, Comments and Reaction, News, Scores, Highlights, Stats, and Rumors
Chris Borland was special. #49ersfan #49ersempire #redandgold #49ersfaithful #49erscast #georgekittle #nfl #nflplayoffs #nflonfox…
Podcast: Chris Borland retires, Tim Tebow (temporarily) returns
Badgers football: Chris Borland's decision to step away still confusing to some — but not to him
San Francisco 49ers Chris Borland retires over repeated head trauma
Chris Borland's early NFL retirement has led to impact off the field - BVM Sports