In-form quarterback Joe Burrow says everyone laughed off the Cincinnati Bengals' divisional hopes in preseason in the wake of clinching the AFC North with Sunday's 34-31 win over the Kansas City Chiefs.

Burrow starred with four touchdown passes but ended the game on the bench with a knee issue as the Bengals won the division for the first time since 2015.

The Bengals had finished last in the AFC North last year with a 4-11-1 record, which makes this season's accomplishments more impressive.

"In the preseason we were talking about the playoffs and I said the goal was the playoffs and the easiest way to do that is to win the division," Burrow said at the post-game news conference.

"Everyone laughed at us a little bit, but we knew the kind of team we had and the kind of guys in the locker room we had, and we knew we could go out and do it."

The Bengals QB insisted the knee complaint that had him benched was "good enough" in the wake of throwing 971 yards in the past two games, which is the most in consecutive wins in NFL history.

Burrow completed 30 of 39 attempts for 446 yards with four touchdown passes and no interceptions against the Chiefs.

Wide receiver Ja'Marr Chase also made history with the rookie record for most single game receiving yards (266). It was also a Bengals franchise record and the most ever against the Chiefs.

Chase added: "We can go as far as we want to. We just won the AFC North."