San Francisco 49ers - Wikipedia
Top 10 Biggest Mistakes the 49ers Have Made Since 2015
SF's Borland quits over safety issues - ABC7 San Francisco
49ers: Familiar face, Colts' Frank Gore, gets to square off
49ers' Chris Borland, 24, quits NFL over concussion worries
Frank Gore says he 'bleeds' 49ers, who he'll face Sunday – East
Is the 49ers' hiring of Jim Tomsula about keeping the peace
NFL off-season report card: Grading the San Francisco 49ers
This sleeping giant will emerge for the San Francisco 49ers in
49ers' Crabtree doesn't know what future holds
San Francisco 49ers: Regrading All 6 NFL Draft Classes of GM Trent
49ers' Chris Borland retiring at 24, wary of head trauma – The
Colts' Frank Gore rips former 49ers GM and Twitter loves it