The last unbeaten run in Kansas City is over. In a lopsided Seahawks vs Chiefs matchup on Sunday Night Football, Seattle smothered Patrick Mahomes and the Chiefs offense at Lumen Field and won 20-3, handing Kansas City its first loss of the 2026 season.
The Chiefs arrived at 5-0 and left at 5-1. Seattle, which had dropped two straight, climbed back above .500 at 4-3.
How Seattle's Defense Shut Down Patrick Mahomes
This was one of the quietest nights of the Patrick Mahomes era. He completed 19 of 33 passes for 165 yards with an interception and a lost fumble, and his 58.3 passer rating ranks among the worst regular-season marks of his career.
The numbers tell the rest of the story:
- 213 total yards for Kansas City, including just 50 on the ground
- 3 of 11 on third down
- 11 first downs, compared with 24 for Seattle
- Zero trips into the red zone, a first in any Mahomes start, playoffs included
Seattle, meanwhile, piled up 410 yards and converted 11 of 16 third downs.
Kenneth Walker III's Homecoming Falls Flat
The headline storyline before kickoff was Kenneth Walker III returning to Seattle. Walker was the Seahawks' Super Bowl MVP last season before signing with Kansas City, and he entered the night leading the NFL at 133 rushing yards per game.
His former teammates had other plans. Walker managed 36 yards on 14 carries, an average of 2.6 yards per attempt.
Jaxon Smith-Njigba Keeps Rolling
On the other side, Jaxon Smith-Njigba continued his breakout season with nine catches for 150 yards and a touchdown. It was his sixth 100-yard game in seven outings.
His 28-yard touchdown from Sam Darnold, set up by a Ty Okada interception of Mahomes, gave Seattle a 10-0 lead late in the first half. Darnold finished 20 of 28 for 257 yards with one touchdown and one interception.
Emanuel Wilson sealed the game with a 21-yard touchdown run with 3:47 remaining, finishing with 100 rushing yards on 24 carries.
Kicking Woes and One Bright Spot for Kansas City
Harrison Butker accounted for the Chiefs' only points with a 50-yard field goal, but he also came up short on a 58-yarder before halftime and missed a 45-yard try wide right in the fourth quarter.
The lone highlight belonged to Travis Kelce, whose four receptions moved him past Marvin Harrison and Cris Carter into fifth place on the NFL's all-time receptions list with 1,104.
"All three phases we struggled, so we've got to do better," Chiefs coach Andy Reid said afterward.
What's Next for Both Teams
Kansas City travels to Denver next Sunday to face the 5-2 Broncos. Seattle hosts the 5-2 Bears on Monday night. With the Chiefs' loss, the Vikings are the NFL's only remaining unbeaten team.
Frequently Asked Questions
What was the final score of Seahawks vs Chiefs?
Seattle won 20-3 on Sunday, October 25, 2026, at Lumen Field.
What is the Chiefs' record now?
Kansas City is 5-1 after suffering its first loss of the season.
Who starred for Seattle?
Jaxon Smith-Njigba had 150 receiving yards and a touchdown, and Emanuel Wilson ran for 100 yards.