The San Francisco 49ers are mourning the loss of former linebacker Jim Fahnhorst, a three-time Super Bowl champion and key contributor to the team's dynasty of the 1980s. Fahnhorst died Wednesday at the age of 66, the team confirmed. No cause of death was immediately given.
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"We are deeply saddened by the passing of former linebacker Jim Fahnhorst," the franchise said in a statement. "Our thoughts are with his family."
A Minnesota native, Fahnhorst carved out an impressive career in San Francisco after an unconventional path to the NFL. He was selected in the fourth round of the 1982 draft out of the University of Minnesota, where he was named First-Team All-Big Ten in 1981. Instead of immediately joining the 49ers, he played two years in the USFL before signing with San Francisco as a free agent.
The move allowed him to team up with his older brother, Keith, a longtime 49ers offensive lineman.
"It was a no-brainer," Jim recalled in a 2018 interview on the team's website. "We ran into each other a few times at practice, but we had an understanding that we weren't going to try and make each other look bad. It was kind of uncomfortable."
Fahnhorst went on to play seven seasons with the 49ers, appearing in 82 games and starting 38. He totaled 232 tackles, seven interceptions and a sack, while helping San Francisco capture Super Bowl titles in XIX, XXIII and XXIV.
Keith retired in 1987 after a 14-year career, and the two brothers returned to the Minneapolis area, where they stayed close until Keith's death in 2018, also at the age of 66.
Jim Fahnhorst's legacy remains tied to one of the NFL's greatest dynasties and a family bond that defined his playing career.

