Close games used to be where Kansas City went to die. Something has changed.
Last season's Chiefs were 1-9 in games decided by a touchdown or less — a 10% close-game win rate against a league baseline roughly three and a half times higher. That number wasn't bad luck. It was a portrait of a team that repeatedly had the margin to win and repeatedly found a way not to. I've written twice now about how the ground game's absence was the connective tissue running through that collapse: no run game meant predictable third-down situations, predictable third-down situations meant defenses could pin their ears back, and a quarterback still working back from a torn ACL and LCL had nowhere to hide when the pocket compressed in the fourth quarter.
What's different now is the sequencing. Kenneth Walker's emergence at the top of the backfield depth chart changes the arithmetic of late-game possession in a way Kareem Hunt — effective as he was, eight touchdowns in 2025 notwithstanding — simply couldn't provide on his own. Hunt was a finisher and a short-yardage weapon. Walker is a between-the-tackles grinder who forces defensive coordinators to commit a safety to the box before the snap, which is exactly the coverage manipulation a recovering Mahomes needs to operate without having to manufacture everything himself.
The deeper issue last year wasn't that Mahomes was bad — 3,587 passing yards and 22 touchdowns in 14 games is a functional quarterback season, not a disaster. The issue was that the offense was one-dimensional enough that opposing defenses could afford to play coverage shells on third and medium, daring Kansas City to beat them with the run. They couldn't. The Chiefs converted close-game situations at a rate that would embarrass a .500 team, and the run game's inability to manufacture first downs in the fourth quarter was the structural reason why.
The fix isn't complicated to describe, even if it was hard to execute: make defenses respect the run early enough that play-action opens the intermediate passing game, which shortens the field and keeps drives alive in the fourth quarter. That's the formula Reid has used for the better part of two decades. The 2025 Chiefs couldn't run it because they didn't have the personnel to force that defensive respect. My read is that Walker, in the games we've seen so far this season, is providing exactly that forcing function — and the downstream effect is showing up in the close-game column in a way that 2025's version of this team never managed.
The caveat worth keeping is that this remains a small sample. One dominant performance doesn't rewrite a systemic failure; it raises a hypothesis. But the hypothesis is grounded in something real: when Kansas City can make a defense choose between stopping the run and stopping Travis Kelce on a seam route, Mahomes becomes dangerous in a way that no amount of scheme adjustment could unlock last year. The 2025 Chiefs lost close games because they couldn't control the clock or the line of scrimmage when it mattered most. The 2026 version, if Walker holds up, has a credible answer to both problems. That's not a vibe. That's a structural change — and structure is what decides games in January.