A look at a big day in Kansas City where the Chiefs beat Arizona 31-13.

What it means: The Chiefs are back in first place by themselves. Kansas City is 6-4 and is in good shape with six games to go. Oakland was hammered, 35-3, in Pittsburgh, so the Chiefs have a one-game lead over the Raiders. Kansas City fell into a tie (Oakland owned the tiebreaker) with an embarrassing 49-29 loss at Denver last week. The Chiefs came into the Arizona game, in which Kansas City coach Todd Haley beat his former team, with two straight losses. Kansas City is 5-0 at New Arrowhead Stadium.

Tomorrow’s talker: The Kansas City run game, ranked No. 1 in the NFL, had a bounce-back game after two subpar performances. Kansas City used the run game the way it wanted to -- with both Jamaal Charles and Thomas Jones hammering the ball. Charles had 88 yards on 12 carries and Jones had 71 yards on 15 carries. Kansas City finished with 159 yards rushing. Quarterback Matt Cassel added 193 yards and two touchdowns. Cassel had a passer’s rating of 115.5 as the run as the run allowed Cassel to manage the game efficiently. This is how the Chiefs win games.

Trending: Dwayne Bowe is playing well. After a 13-catch, 186-yard performance in Denver, Bowe had six catches for 109 yards Sunday. He is Cassel’s favorite target again and set a team record Sunday by catching a touchdown pass in his sixth straight game.

What’s next: Kansas City has a winnable game at Seattle on Sunday. If the Chiefs can end its four-game road losing streak, they will be in fine shape in the AFC West.