The reigning Super Bowl champions, the Kansas City Chiefs, are no longer the only undefeated team in the NFL after the Buffalo Bills handed them their first loss of the 2024 season.

In a highly anticipated rematch of the 2023 AFC Divisional Playoff game, Josh Allen and the Bills defeated Patrick Mahomes and the Chiefs in a 30-21 victory on Sunday.

Kansas City was the last undefeated team in the league heading into the day. However, the Chiefs will now drop to 9-1 on the season while the Bills – now at 9-2 – have propelled themselves into second place atop the AFC with seven weeks remaining in the season.

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While Kansas City trailed for the majority of the game, it was a 26-yard touchdown run by Allen late in the game that helped seal Buffalo’s victory. It also ended a 15-game winning streak for the Chiefs dating back to last season and extended the Bills’ winning streak to six in a row.

“It’s just another Week 11 win,” Allen said of the win. “You know, knowing how things usually go, we’ll probably see this team again at some point. We had to get there first.”

Chiefs quarterback Patrick Mahomes praised the Bills for their hard-fought victory, but believes the loss is something the Chiefs can learn from and grow from as the season progresses.

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“You can use it as fuel,” Mahomes said after the loss. “I mean, like I said, they’re a good football team. So, there’s nothing stopping you from losing to them. But we think we could play better. So we’re going to get back to work and try to use this as a spark so we can be a better football team.”

The Bills will have a bye next week before hosting the 5-5 San Francisco 49ers on December 1. The Chiefs, meanwhile, will travel to Charlotte, North Carolina next Sunday to face the 3-7 Panthers.