The Kansas City Chiefs may face an unexpected question at the most important position on the field as the 2026 season approaches. If Patrick Mahomes is not ready for Week 1, projections point to veteran Marcus Mariota as the likely starter.
Mahomes’ health and readiness remain central to Kansas City’s outlook, but contingency planning is part of every offseason evaluation. The Chiefs have positioned Mariota as a trusted backup capable of stepping into the huddle without a dramatic overhaul of the offense.

Mariota brings experience and mobility that align with the Chiefs’ scheme, allowing the playbook to remain relatively intact in Mahomes’ absence. While he does not replicate Mahomes’ improvisational brilliance, he offers steadiness and a history of managing games when called upon.
Kansas City’s coaching staff has long emphasized preparation and depth, especially at quarterback. A seasoned reserve can stabilize the early portion of the schedule, buying time if Mahomes requires additional recovery without forcing the team into desperation moves.
NFL Analysis Predicts Marcus Mariota as Kansas City Chiefs’ QB if Patrick Mahomes Isn’t Ready

Mariota may end up calling the plays for Kansas City next season if Mahomes isn’t ready for the task by then. This is detailed more in an analysis by Seth Walder for ESPN.
Of course, this hinges on the recovery timeline of Patrick Mahomes, who had surgery in December to repair two ligaments in his left knee. Mahomes has indicated he wants to be back for Week 1, and perhaps that will happen. But any prediction about his Week 1 status is just a guess, so I imagine that the Chiefs would want to be cautious with Mahomes, given his importance to the franchise.
If that is the case, they’d want a reliable backup who can ideally win a few games while Mahomes finishes up his recovery. I believe Mariota fits the bill.
The 32-year-old stood in for Jayden Daniels for eight starts in Washington last season and was capable, with a 50.2 QBR. He has a long history of being solid, which is essentially what Kansas City needs — a player who can keep the team afloat in Mahomes’ absence but is willing to be a backup and won’t be overly expensive.
The broader roster around the quarterback spot also factors into the equation. With established playmakers and a disciplined defense, the Chiefs would not need Mariota to carry the offense, only to execute efficiently and limit mistakes until Mahomes returns to full strength.
Ultimately, the Chiefs’ ceiling in 2026 hinges on Mahomes’ availability, but their floor depends on the reliability of their backup plan. If Week 1 arrives without their franchise star under center, Kansas City appears prepared to turn to Mariota to keep its championship aspirations intact.