Nashville, Tenn. ? This is an early AFC showdown. And that’s the beauty of offseason decisions paying off immediately in wins.

The Kansas City Chiefs are riding high with new coach Andy Reid and new quarterback Alex Smith. One of the NFL’s last undefeated teams, the Chiefs are only the second franchise in league history to start 4-0 after losing at least 14 games the year before. Reid found a locker room filled with players eager to do whatever it took to move past last season’s 2-14 record.

“They didn’t want to dwell on the past,” Reid said. “They were right with me on that. The players said, ‘Let’s go. Let’s move forward.'”

The Titans are an unexpected 3-1 after their own offseason overhaul. They brought in 20 new players and five new coaches, including former Saints defensive coordinator Gregg Williams to go with a crop of developing players eager to win after 2012’s woeful 6-10 record.

“We’re going to go out there and prove that we should be one of the top contenders out there,” said defensive tackle Jurrell Casey, looking forward to today and past the single loss to Houston in overtime in Week 2.

The Chiefs are tied with Denver and Peyton Manning atop the AFC West, while the Titans are atop the AFC South with Indianapolis. Both are tied for the NFL’s best turnover margin at plus nine, though the Chiefs had their first turnovers in last week’s 31-7 win over the New York Giants. The Titans have yet to lose a ball and forced four turnovers last week routing the Jets, 38-13.