Patrick Mahomes passed for 320 yards and three touchdowns, and the Kansas City Chiefs locked up the top seed in the AFC for the fourth time in seven seasons with a 29-10 win over the Pittsburgh Steelers.

The two-time defending Super Bowl champions never had a real challenge during this game.

The Steelers have dropped three straight as their chances of capturing the AFC North took another hit.

In the game, Travis Kelce caught eight passes for 84 yards and made history as he became the third tight end in NFL history to reach 1,000 receptions, joining Hall of Famer Tony Gonzalez and Jason Witten.

On the other side, Russell Wilson threw for 205 yards for Pittsburgh, while WR George Pickens finished with three receptions for 50 yards after missing three games with a hamstring injury.

Kansas City Chiefs Lock Up Number One Seed

Kansas City celebrated Christmas this year by locking up the AFC’s top playoff seed, once again earning a bye and home-field advantage through the conference championship.

The Chiefs clinched their ninth consecutive AFC West title in Week 14 after defeating the Los Angeles Chargers.