A Thanksgiving nightmare for Kansas City. Chiefs didn’t just lose to Dallas… they may have lost their season. Both starting tackles went down in the same game

Thanksgiving night in Arlington was meant to be a celebration of the Kansas City Chiefs. The league put them on a prime stage, Patrick Mahomes returned to Texas for a homecoming, and a win over the Dallas Cowboys would have fueled Kansas City’s Super Bowl chase. Instead, the Chiefs left AT&T Stadium with a 31–28 defeat and a darker concern that may define the rest of their year: both starting offensive tackles were injured before the clock hit zero.

The first blow arrived in the second half. Right tackle Jawaan Taylor went down with an ankle injury and was ruled out after a brief evaluation on the sideline. Kansas City slid a backup into place, tightened protections, and tried to keep the offense on schedule. For a moment, it looked manageable. Then the nightmare doubled. Late in the third quarter, left tackle Josh Simmons exited with a wrist injury. He never returned. By the closing possessions, Mahomes was taking snaps behind a line that included multiple backups, an unsettling reality against a Dallas front that thrives on speed and pressure from the edges.

Losing one tackle is painful. Losing both in a single game is a structural crisis. Tackles define the borders of the pocket. They are tasked with absorbing speed rushers, setting the depth for dropbacks, and giving guards and centers the freedom to concentrate on interior power and stunts. When the perimeter changes midgame, the quarterback’s internal clock speeds up, route trees shorten, and the playbook narrows. That shift was visible against Dallas’ aggressive rush. Mahomes still produced flashes of brilliance, but the pocket no longer offered reliable landmarks for stepping into throws or climbing away from pressure. The offense didn’t collapse, but it lost rhythm at the worst possible time.

The postgame scene only sharpened anxiety among Chiefs fans. Reporters later saw Simmons with his left wrist in a cast and his arm supported by a sling. A cast-and-sling combination is not a diagnosis on its own, but it rarely accompanies a minor bruise. Head coach Andy Reid offered a sparse update: Simmons suffered a wrist injury, Taylor was dealing with a triceps strain, and safety Bryan Cook—another starter who left early—had sprained his right ankle and did not return. Reid’s tone was calm, but the lack of detailed timelines left everyone guessing, which is often when worry grows loudest.

Kansas City does gain a small scheduling gift. Playing on Thanksgiving provides an extended recovery window before the next game, and those extra days matter when swelling must subside, imaging must be taken, and early rehab begins. Still, rest alone is not a cure-all. If Simmons’ wrist involves a fracture or meaningful ligament damage, the Chiefs could be without their starting left tackle for several weeks. If Taylor’s triceps strain limits strength or range of motion, the right side may remain compromised even if he suits up quickly. Both outcomes would force Kansas City to live on contingency plans long past Thanksgiving.

That possibility reshapes the entire outlook. Kansas City’s attack is built around Mahomes’ ability to threaten every blade of grass, but that threat depends on protection holding long enough for routes to develop. With backup tackles, the Chiefs may have to keep tight ends and running backs in to chip more often, reducing the number of receivers releasing into patterns. The passing game would tilt toward quick slants, screens, and run-pass options, while the explosive downfield menu shrinks. The run game can suffer too, because tackles are vital for edge sealing and outside leverage. In short, the offense becomes less about attacking defenses and more about surviving them.

The postseason layer makes the problem even sharper. January defenses exploit weaknesses without mercy. They overload edges, stunt into gaps, and bait quarterbacks into holding the ball. Even a generational player like Mahomes cannot succeed forever when opponents can isolate inexperienced tackles in space on third down. Kansas City has survived line injuries in past seasons, and Reid’s staff has a reputation for adapting. But this AFC field is unforgiving. One injury can be schemed around; two at tackle can tilt a season.

None of this is a verdict, only a warning. Injuries can end up being less severe than they appear in the moment, and Kansas City’s replacements will get a full week of first-team reps if needed. Mahomes has won playoff games behind imperfect lines, and Reid’s system is flexible enough to evolve. Yet Thursday did more than hand the Chiefs a close loss. It planted real doubt about the stability of the unit that protects their franchise quarterback.

As the league turns toward December, Kansas City’s path depends on medical updates as much as wins and losses. The Chiefs can absorb a narrow defeat to Dallas. What they cannot absorb is a prolonged absence of the men anchoring their edges. After this Thanksgiving nightmare, the question is not simply how Kansas City lost. It is how bad the damage truly is—and whether their season can withstand it.