Patrick Mahomes will be available and is expected to start at quarterback when the Kansas City Chiefs open their 2026 season Monday against the Denver Broncos at 8:15 p.m. ET on ABC/ESPN. The decision marks the culmination of a 274-day recovery from the most significant injury of his nine-year career.
On December 14, Mahomes suffered a torn ACL and LCL in his left knee during what ESPN's reporting describes as a moment when he "crumbled to the turf, grabbed his knee and screamed in pain." Within hours of the injury, with an MRI confirming the damage, a room full of people gathered at the Chiefs' training facility — head trainer Rick Burkholder, Mahomes' agent Chris Cabott, his wife Brittany, coach Andy Reid, general manager Brett Veach and owner Clark Hunt. They faced a calendar problem: the 2026 NFL season was scheduled to begin September 13, some 273 days later.
The group contacted Dr. Dan Cooper, the Dallas Cowboys' head team physician who specializes in knee and shoulder injuries. Per ESPN's reporting, Cooper presented a proposition to Mahomes: undergo surgery in Dallas the next morning if he wanted to maximize his chances of being ready for Week 1. The quarterback's response was immediate. "I'm willing," Mahomes said, "to do whatever it takes."
What followed was what ESPN characterizes as a "nine-month odyssey" — a day-after-day commitment to rehab and recovery that departed from standard timelines for ACL injuries. Throughout the process, ESPN reports that Mahomes repeated his commitment repeatedly, and "his exhaustive, day-after-day actions have led to him achieving his mission."
The availability of Mahomes for Monday's matchup represents a dramatic change from the immediate post-injury outlook. Torn ACLs typically sideline players for significantly longer periods, but the aggressive surgical intervention and rehabilitation regimen appear to have accelerated the timeline. At 30 years old, Mahomes will now attempt to lead the Chiefs' offense immediately.
Yahoo Sports has named the Chiefs' "comeback campaign" among the top NFL storylines heading into 2026, underscoring the narrative weight of Mahomes' return. The quarterback will face a Denver Broncos team in a prime-time slot that carries considerable implications for Kansas City's divisional positioning early in the season.
This article synthesizes reporting from ESPN, Yahoo Sports. Top story: "Inside Patrick Mahomes' remarkable return from knee injury" (ESPN).