The Chiefs are placing left tackle Josh Simmons on injured reserve as he continues recovering from a bulging lumbar disc. Kansas City says he has plateaued in rehab and needs more time before returning to full function; surgery is not currently required. The move leaves Patrick Mahomes without his expected blindside protector for at least four games.

By the Numbers
  • Simmons, 23, was the No. 32 pick in the 2025 draft.
  • He must miss at least 4 games on injured reserve; Week 11 is the earliest he can return.
  • Backup Kahlil Benson has not allowed a sack, per Pro Football Focus.
  • Kenneth Walker III leads the NFL with 665 rushing yards.
Yes, But

Simmons’ back injury has improved on MRI, and doctors have recommended rehab rather than surgery. Still, his recovery has stalled, and his availability is a concern after he also missed significant time in college and during his rookie season.

State of Play
  • Kansas City will rely on Benson at left tackle while Simmons is sidelined.
  • The Chiefs’ upcoming opponents include the Seahawks, Broncos, Jets and Falcons.
  • Simmons returned to limited practice last week but was not cleared for game action.
What's Next

Simmons will continue rehab, with a potential return no earlier than Week 11, when Kansas City hosts the Cardinals. The Chiefs will need their current offensive line to hold up in the meantime.

Bottom Line

The Chiefs are choosing recovery over a rushed return. Benson’s sack-free start offers some reassurance, but protecting Mahomes without Simmons remains a key test for Kansas City.