Simmons (back) has been ruled out ahead of Monday's game against the Broncos, Matt Derrick of ChiefsDigest.com reports.
Simmons has been dealing with a persistent back injury throughout the offseason. The 2025 first-rounder has seemingly not been able to progress much in his recovery. With Simmons unable to suit up, rookie undrafted free agent Kahlil Benson is set to make his NFL debut protecting Patrick Mahomes' blindside.