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3h ago

49ers' Nick Bosa Tears Right ACL, Will Undergo Season-Ending Surgery

Imaging showed a clean right-knee tear, setting up routine surgery with Bryce Huff stepping into a larger role.

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Sep 21, 2025; Santa Clara, California, USA; San Francisco 49ers defensive end Nick Bosa (97) on the field during warm ups prior to a game against the Arizona Cardinals during the first half at Levi's Stadium. Mandatory Credit: Cary Edmondson-Imagn Images
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Nathan Ray Seebeck-Imagn Images

Overview

  • Bosa exited late in the first quarter of Sunday's 16-15 win over the Cardinals after his right knee bent awkwardly and he gave a thumbs-down on his way to the locker room.
  • MRI results on Monday confirmed a torn ACL in his right knee with no additional ligament damage, according to multiple reports.
  • The five-time Pro Bowler will miss the remainder of the 2025 season; it is his second ACL tear after a similar injury in 2020.
  • San Francisco plans to rely on veteran edge rusher Bryce Huff and expand snaps for younger players such as rookie Mykel Williams as it reworks the rotation.
  • The injury hits a 3-0 49ers squad already dealing with setbacks to Brock Purdy and George Kittle as the team prepares to host the Jaguars this week.