Former Badger Borland retires from NFL due to concerns about head trauma | FOX Sports
Chris Borland retirement from 49ers shows shift in attitude - Sports Illustrated
49ers Linebacker Quits After 1 Season, Citing Safety Concerns : The Two-Way : NPR
Chris Borland's dad speaks on son's retirement | theScore.com
Ex-49er Chris Borland still asked why he quit — and he keeps explaining – East Bay Times
Ex-49er Chris Borland still asked why he quit — and he keeps explaining – East Bay Times
Chris Borland says he'll return portion of bonus money to 49ers | The Sacramento Bee
49ers linebacker Chris Borland retires at 24 due to head trauma concerns | LAist - NPR News for Southern California - 89.3 FM
Fearing brain injury, 49ers' Chris Borland retires after one year | The Sacramento Bee
Chris Borland and the Revenge of History | The Nation
49ers' Chris Borland Retires From NFL Over Safety Concerns
Bill Polian on Chris Borland retirement: 'Football has a lot of danger in it ... just as the military does' - nj.com
Ex-49er Chris Borland still asked why he quit — and he keeps explaining – East Bay Times
Tre Mason, Chris Borland
:format(png)/cdn.vox-cdn.com/uploads/chorus_image/image/46817000/sbnation-share__47_.0.0.png "50 days until 49ers kickoff: Who wore it best? Who wears it now? - Niners Nation")
50 days until 49ers kickoff: Who wore it best? Who wears it now? - Niners Nation
Ex-49er Chris Borland still asked why he quit — and he keeps explaining – East Bay Times
NFL Pro Line San Fransisco 49ers Chris Borland #50 Jersey Stitched Numbers L | eBay
NFL releases statement on Chris Borland's retirement
San Francisco 49ers' Chris Borland reveals a concussion during camp made him walk away | Daily Mail Online
49ers' Borland retires after rookie year over head trauma fears – Santa Cruz Sentinel
Chris Borland Retires at Age 24 Over Concussions
