The Chris Borland Effect: He's Changed His Future, but Did He Change the NFL's?, News, Scores, Highlights, Stats, and Rumors
Former Wisconsin and NFL linebacker Chris Borland praises doctor for saving his life
49ers' Chris Borland, 24, retires because of brain injury concerns - Los Angeles Times
For John Urschel, math was his passion—and concussions a concern - Sports Illustrated
NFL player Chris Borland retires after one season at age 24 due to head injury concerns
Are there any NFL players that retired early due to losing passion for the game and not injury? : r/nfl
San Francisco 49ers linebacker Chris Borland retires over head injury concerns - ESPN
NFL Player Chris Borland Retires Due to Concussion Risk
Chris Borland retires: The NFL's troubling CTE comments - Sports Illustrated
Former NFL player Chris Borland on Tackle Can Wait PSA