Is Chris Borland an outlier or the start of a trend? With concussion risks still uncertain, it's tough to say
San Francisco 49ers Unveil New Alternate Jerseys for 2015-16 Season, News, Scores, Highlights, Stats, and Rumors
2023 NFL season - Wikipedia
San Francisco 49ers: 2015 NFL Regular-Season Primer, News, Scores, Highlights, Stats, and Rumors
San Francisco 49ers - Wikipedia
San Francisco 49ers 2015 Roster Movement
2015 San Francisco 49ers Schedule Unveiled - CBS Sacramento
San Francisco 49ers - Wikipedia
2015 St. Louis Rams, American Football Wiki
Tampa Bay Buccaneers - Wikipedia
San Francisco 49ers - Wikipedia