The Chiefs vs Seahawks game ended in a statement win for Seattle. The Seattle Seahawks beat the Kansas City Chiefs 20-3 at Lumen Field on Sunday Night Football in Week 7 of the 2026 NFL season, handing Kansas City its first defeat of the season and ending the Chiefs' unbeaten start. It was a result that was trending per news coverage on Sunday night and into Monday morning, as fans searched for the Chiefs vs Seahawks score after one of the most one-sided prime-time games of the season so far.
Seattle, the defending Super Bowl champions, produced its most complete performance of the year. The Seahawks' defense held Patrick Mahomes without a touchdown pass, limited Kansas City to just 213 yards of total offence, and never allowed the Chiefs to find any rhythm. Kansas City, which arrived in Seattle at 5-0 and among the last unbeaten teams in the league, left at 5-1 after a night in which almost nothing went right.
For Seattle, the win also ended a two-game losing run and lifted the Seahawks to 4-3. It kept them firmly in the hunt in the NFC West, a division race that took another twist on the same Sunday when the San Francisco 49ers lost for the first time this season. This was not a lucky win or a late escape. Seattle led from the second quarter onwards, controlled the ball for almost 36 minutes, and closed the game out with a late touchdown that settled any lingering doubt.
Chiefs vs Seahawks score: how Seattle built a 20-3 win
The first quarter passed without a point, but the pattern of the night was already forming. Seattle's defense was disciplined and physical, Kansas City's offence could not sustain drives, and the home crowd at Lumen Field grew louder with every stop. The breakthrough came in the second quarter, when Jason Myers kicked a 25-yard field goal to put Seattle 3-0 ahead.
The decisive moment of the first half followed soon after. Sam Darnold found Jaxon Smith-Njigba deep down the left sideline for what was initially ruled short of the goal line, only for a video review to determine that the ball had crossed the line for a 28-yard touchdown. With 1:44 left in the first half, Seattle led 10-0, and the score stayed that way until half-time after Kansas City's Harrison Butker was short on a 58-yard field-goal attempt on the final play of the half.
Seattle took the second-half kickoff and extended its lead through another Myers field goal, this time from 35 yards, to make it 13-0. Kansas City finally got on the scoreboard late in the third quarter, when Butker kicked a 50-yard field goal to cut the gap to 13-3. That, however, was as close as the Chiefs would get, and it was their only score of the entire game.
The fourth quarter belonged to Seattle's running game and its defense. Emanuel Wilson, who carried the ball 24 times for 100 yards, broke free for a 21-yard touchdown run with 3:47 remaining to make the final score 20-3. Kansas City's last hopes faded when Butker missed a 45-yard field-goal attempt in the fourth quarter, and Seattle saw out the remaining minutes without alarm.
The quarter-by-quarter Chiefs vs Seahawks score tells the story in miniature: 0-0 after the first quarter, 10-0 to Seattle at half-time, 13-3 after three quarters, and 20-3 at full time. Kansas City never led, never reached the end zone, and never scored in three of the four quarters.
Chiefs vs Seahawks stats: the numbers behind the upset
The Chiefs vs Seahawks stats underline just how complete Seattle's win was. Seattle outgained Kansas City 410 yards to 213, won the first-down battle 24-11, and held the ball for 35 minutes and 51 seconds compared with Kansas City's 24 minutes and 9 seconds. In a game between two teams with championship ambitions, those are not marginal differences. They are the numbers of a team that controlled the line of scrimmage and the tempo from start to finish.
Sam Darnold completed 20 of his 28 passes for 257 yards, with one touchdown and one interception. His most important connection was with Smith-Njigba, who caught nine passes for 150 yards and a touchdown and repeatedly beat man coverage. Smith-Njigba's 28-yard touchdown just before half-time changed the complexion of the game, giving Seattle a two-score cushion and forcing Kansas City to chase the game in the second half.
Wilson's contribution was just as important. His 24 carries for 100 yards and a touchdown gave Seattle balance, kept the chains moving on third down, and allowed the Seahawks to finish the game on their own terms. When Seattle needed to close the game out in the fourth quarter, it was Wilson who delivered the clinching score.
For Kansas City, the individual numbers were unusually quiet. Patrick Mahomes completed 19 of his 33 passes for 165 yards, with one interception and no touchdown pass. It was only the fifth time a team quarterbacked by Mahomes had been held scoreless in a first half, according to post-game reporting, and the Chiefs finished the night without a single touchdown. Tight end Travis Kelce caught four passes for 44 yards, while running back Kenneth Walker III, the former Seahawk who was the MVP of Seattle's Super Bowl LX win before joining Kansas City as a free agent, was limited to 36 yards on 14 carries against his old team.
The turnover count was level at one interception apiece. Seattle safety Ty Okada intercepted Mahomes to set up the Seahawks' first touchdown drive, while Kansas City cornerback Nohl Williams intercepted Darnold in the end zone in the first half. The difference was what each team did after those moments: Seattle turned its takeaway into points, while Kansas City could not build on its own.
Why Seattle's defense smothered Patrick Mahomes
Seattle's game plan against Mahomes was built on discipline rather than recklessness. The Seahawks did not need to blitz wildly or gamble for turnovers. Instead, their front seven controlled the running game, their coverage stayed tight on Kansas City's receivers, and Mahomes was repeatedly forced to check the ball down or throw under pressure.
The most telling statistic of the night was Kansas City's total offence: 213 yards. For an offence led by Mahomes, that is a remarkably low figure, and it reflected a night in which the Chiefs could not stretch the field. Kelce, usually the safety valve who keeps Kansas City's offence moving, was held to 44 receiving yards. Walker, signed to give the Chiefs a punishing ground game, found no room against the team that knows him best.
Seattle's pass rush also played its part. Kansas City's pass rushers failed to record a sack on Darnold, according to post-game reporting, but the reverse pressure told a different story: Mahomes was hurried, hit and kept in the pocket, and he threw an interception while going without a touchdown pass. When a quarterback of Mahomes' quality finishes a game with 165 passing yards and no touchdown, it is almost always a team defensive performance rather than a single player's failure.
There was also a psychological edge for Seattle. This was the defending champion at home, in prime time, against an unbeaten team, after two straight defeats. The Seahawks played like a team with something to prove, and the performance was described after the game as their best of the season. The defense, in particular, looked like the unit that won the Super Bowl in February: fast, organized and unwilling to give up explosive plays.
What the result means for the playoff race
The Chiefs vs Seahawks result does not end Kansas City's season, but it does change the conversation around it. At 5-1, the Chiefs remain one of the best teams in the AFC, and a single defeat in Seattle in prime time is not a crisis. What it does remove is the unbeaten tag, and with it the sense of inevitability that had started to build around a 5-0 start. Kansas City will now look to respond in Week 8 against the Denver Broncos, a game that suddenly carries extra importance as a test of how the champions of recent years handle their first setback.
For Seattle, the win is potentially season-defining. At 4-3, the Seahawks are back in the thick of the NFC West race, and they did it by beating the league's last unbeaten team in convincing fashion. The division picture also shifted on Sunday when the 49ers lost 29-20 to the Atlanta Falcons, their first defeat of the season. Seattle had been two games behind San Francisco; the gap, and the momentum, now look very different.
Elsewhere on a busy weekend of world sport, readers can also catch up on Real Madrid's 2-1 El Clásico win over Barcelona, the 49ers' earlier unbeaten run, another of the NFL season's biggest upsets, and the NFL and NBA scores and schedules guide.
The broader lesson of Sunday night is a familiar one in the NFL: unbeaten runs are fragile, home-field advantage in prime time is real, and a defense playing at its best can still shut down even the league's most gifted quarterback. Kansas City will have chances to prove that this was a bad night rather than a turning point. Seattle, meanwhile, has given itself a result to build a season around. If the Seahawks go on to make a deep playoff run, the night they beat the Chiefs 20-3 at Lumen Field will be remembered as the night their season turned.
Sources: Reuters; Sports Illustrated; Chiefs Wire / USA Today; The Score. Scoring and player statistics are as reported by those outlets; final official statistics remain subject to the NFL's official box score.