San Francisco 49ers Linebacker Chris Borland Retires From The NFL
Chris Borland says he'll return portion of bonus money to 49ers
Borland returns pick for TD, 49ers beat Texans
49ers Chris Borland retires from football, citing concern over head injuries - Field Gulls
Chris Borland says he is paying back 3/4 of his signing bonus - Niners Nation
49ers' Chris Borland, 24, quits NFL over concussion worries
San Francisco 49ers on X: Want to relive Chris Borland's stellar rookie year with #49ers? Check out these rare images. / X
Former Niners linebacker Borland keeping busy with life after football
Chris Borland, Fearing for Health, Retires From the 49ers. At 24. - The New York Times
Chris Borland - Wikipedia
49ers hit hard after unexpected offseason departures - The Boston Globe
Chris Borland Retires: Six Things to Know About 49er Who's Walking Away
Throwback Thursday Tribute: Linebacker Chris Borland