After guaranteeing that the Las Vegas Raiders would beat the Kansas City Chiefs, head coach Klint Kubiak was mercilessly trolled by Patrick Mahomes' wife, Brittany.

She was at the game at Allegiant Stadium in Sin City, posting a carousel of pictures from her time there. Mahomes wore a brown leather jacket and blue jeans.

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Mahomes captioned her post, “We're winning. We're gonna win the game,” with a face with hand over mouth emoji. Clearly, this was a shot at the Raiders' coach.

To the surprise of many, the Raiders were beating the Chiefs 13-10 heading into halftime. Speaking to CBS Sports' Tracy Wolfson, he guaranteed that his team would pull out the win, saying, “Gotta be better, but you know what? We're winning. We're gonna win the game.”

"Gotta be better, but you know what? We're winning. We're gonna win the game."

– @Raiders coach Klint Kubiak to @tracywolfson at halftime 👀 pic.twitter.com/87ESYVPBiC

— NFL on CBS 🏈 (@NFLonCBS) October 4, 2026

This did not happen. The Chiefs erased the deficit and beat the Raiders 30-27. They are now 4-0 and atop the AFC West. The Raiders entered the game 3-0 as well before dropping to 3-1.

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How Patrick Mahomes and the Chiefs beat Klint Kubiak's Raiders

Kansas City Chiefs quarterback Patrick Mahomes (15) and Las Vegas Raiders defensive end Maxx Crosby (98) in action during the second quarter at Allegiant Stadium.
Joe Camporeale-Imagn Images

The Chiefs struggled in the third quarter, only gaining just 18 yards on their two possessions. However, Kenneth Walker III pulled off a 76-yard run to end the quarter. This set the offense up inside the 10-yard line.

Mahomes threw a touchdown pass to Tyquan Thornton two plays later to go up 17-13. Two possessions later, Walker would punch it in to go up again 23-19.

Unfortunately for the Raiders, they fumbled on the ensuing kickoff, setting the Chiefs up 22 yards away from the end zone. Walker scored the very next play to put his team up 30-19.

The Raiders would answer quickly, scoring a touchdown and adding the two-point conversion in 76 seconds. Las Vegas' defense then forced a three-and-out, giving Kirk Cousins a chance to tie or win. The Raiders marched down the field, but Cousins threw an interception with a second left to seal the win for the Chiefs.