The Kansas City Chiefs' divisional rival, the Las Vegas Raiders, have hired Pete Carroll to be their next head coach.

Pete Carroll is headed back to an NFL sideline with the Raiders, and he'll become the oldest coach in league history once he debuts in Las Vegas.

The Raiders' new head coach has found success over the years against these other in-division coaches, with a career total 10 wins against Reid, Payton and Harbaugh. This includes an NFC Championship victory over Harbaugh's San Francisco 49ers in the 2013 season.

The Raiders were among the front-runners to land Detroit Lions offensive coordinator Ben Johnson, but had to pivot when Johnson took over in Chicago. Here's a look at how the NFL world reacted to that pivot, and the hiring of Carroll:

The four AFC West head coaches—Andy Reid, Jim Harbaugh, Sean Payton, and Pete Carroll—now have a combined 20 Conference Championship appearances and nine Super Bowl appearances. https://t.co/t0myQXaeI6

Fame coach Pete Carroll, joining a stacked AFC West of Jim Harbaugh, Sean Payton and the Kansas City Chiefs' Andy Reid.

Pete Carroll, 73, will return to the sideline with the Las Vegas Raiders after leading the Seattle Seahawks to two NFC titles and the franchise’s only Super Bowl win during a 14-year stretch.

The Las Vegas Raiders are reportedly eyeing a pair of NFL veterans in their search for a new head coach. NFL insider Josina Anderson reported on Thursday

Pete Carroll and the Raiders have reached an agreement on a three-year deal with a fourth-year team option to be the team's new head coach, sources told ESPN's Adam Schefter.

Pete Carroll has a youthful energy that many people half his age don't possess, and the Raiders hope that enthusiasm — and, more importantly, his proven track record — translates to Las Vegas.

The 73-year-old former Patriots and Seahawks coach is returning to the NFL after just one season off the sidelines.

The Las Vegas Raiders are expected to hire Pete Carroll, who spent 14 seasons leading the Seattle Seahawks, as their new head coach. Carroll, who was a Seahawks adviser this season, has a career record of 170-120-1.