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Chiefs Defeat Raiders 30-27 to Maintain Undefeated Record

Patrick Mahomes and Kenneth Walker III led the Kansas City Chiefs to a 30-27 victory over the Las Vegas Raiders, preserving a 4-0 record.

Published October 4, 2026 at 8:03 PM EDT

The short answer

Patrick Mahomes and Kenneth Walker III led the Kansas City Chiefs to a 30-27 victory over the Las Vegas Raiders, preserving a 4-0 record. The Kansas City Chiefs defeated the Las Vegas Raiders 30-27 on Sunday, Oct. 4, at Allegiant Stadium, maintaining a 4-0 record for the season.

Chiefs Defeat Raiders 30-27 to Maintain Undefeated Record

The Facts

Who
Patrick Mahomes, Kenneth Walker III, Kirk Cousins, and Andy Reid
What
The Kansas City Chiefs defeated the Las Vegas Raiders 30-27.
When
Sunday, October 4, 2026
Where
Allegiant Stadium, Las Vegas, Nevada
Why
The Chiefs won to remain 4-0, while the Raiders' quarterback Kirk Cousins saw his seven-game winning streak end.

The Kansas City Chiefs defeated the Las Vegas Raiders 30-27 on Sunday, Oct. 4, at Allegiant Stadium, maintaining a 4-0 record for the season. Quarterback Patrick Mahomes passed for 225 yards and two touchdowns, while running back Kenneth Walker III recorded 177 rushing yards and two touchdowns to lead the Kansas City offense.

The Raiders led the game 13-10 entering the fourth quarter. The loss ended a seven-game winning streak for Raiders quarterback Kirk Cousins, which included four games from the previous season with the Atlanta Falcons. Cousins finished the game with 365 passing yards and two touchdowns.

The lead changed multiple times in the final period after Walker began the quarter with a 76-yard run, reaching a speed of 21.21 mph. The Chiefs took their first lead on an 8-yard touchdown pass from Mahomes to Tyquan Thornton, but Las Vegas regained a 19-17 advantage following two field goals by Matt Gay. Kansas City secured the win following a 2-yard touchdown run by Walker and another score after a Raiders fumble on the subsequent kickoff.

Chiefs wide receiver Tyquan Thornton recorded five catches for 111 yards and two touchdowns before being carted off the field with a left ankle injury. Teammate Rashee Rice also left the game in the first quarter with a hamstring injury and did not return. On the defensive side, the Raiders averaged 2.8 yards per carry, totaling 72 rushing yards, which coach Klint Kubiak identified as a primary area for team improvement.

This outcome affects the standings and health of players within the AFC West division. For the Kansas City Chiefs, the victory preserves a 4-0 start to the 2026 season. The game resulted in injuries to two Kansas City offensive players, Rashee Rice and Tyquan Thornton; Thornton was carted off for a left ankle injury after a 55-yard catch that set up the winning score.

The game also impacts stadium records at Allegiant Stadium in Las Vegas. Chiefs head coach Andy Reid now holds the record for the most wins by any coach at the venue with seven victories, surpassing former Raiders coaches Josh McDaniels and Antonio Pierce. Quarterback Patrick Mahomes remains undefeated in seven total starts at the stadium, including six games against the Raiders and the Super Bowl after the 2023 season.

The Raiders must now prepare for their third road game in four weeks. Following the loss, the team travels to face New England on Sunday, Oct. 11. The Chiefs are off next weekend, with their next game scheduled for Oct. 18 when they host the Los Angeles Chargers. Kansas City coach Andy Reid also noted a lineup change, stating that left guard Kingsley Suamataia did not start for disciplinary reasons in favor of Mike Caliendo, a move he indicated was intended to improve the team and the player moving forward.

Timeline of what happened

Key dates and decisions, in the order they occurred.

  1. October 4, 2026

    Chiefs defeat Raiders

    The Chiefs defeated the Raiders 30-27 at Allegiant Stadium.

  2. October 11, 2026

    Raiders visit New England

    The Raiders are scheduled to play a road game against New England.

  3. October 18, 2026

    Chiefs host Chargers

    Kansas City is scheduled to host the Los Angeles Chargers after a bye week.

Summaries are written by The Plain Record to state the facts of a story plainly and without political slant. Drafted with AI assistance and checked against the source record before publication. See how we report, or report a correction.

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Questions readers ask

What happened: Chiefs Defeat Raiders 30-27 to Maintain Undefeated Record?

The Kansas City Chiefs defeated the Las Vegas Raiders 30-27 on Sunday, Oct. 4, at Allegiant Stadium, maintaining a 4-0 record for the season. Quarterback Patrick Mahomes passed for 225 yards and two touchdowns, while running back Kenneth Walker III recorded 177 rushing yards and two touchdowns to lead the Kansas City offense.

Who is involved?

Patrick Mahomes, Kenneth Walker III, Kirk Cousins, and Andy Reid

When did this happen?

Sunday, October 4, 2026

Where did this happen?

Allegiant Stadium, Las Vegas, Nevada

Why does this matter?

The Chiefs won to remain 4-0, while the Raiders' quarterback Kirk Cousins saw his seven-game winning streak end.