Kansas City, Mo. ? In five years at Oklahoma, Bob and Mike Stoops have won a national championship, two Big 12 Conference titles and completed the resurrection of a once mighty program that was in shambles when they arrived.

The final chapter of the Stoops brothers’ storybook-like ascent to the top together will come tonight, when the No. 1 Sooners (12-0, 8-0 Big 12) go for their third league title in four years against Kansas State (10-3, 6-2).

By noon Sunday, younger brother and co-defensive coordinator Mike will be on a flight for Tucson, Ariz., where he accepted the University of Arizona’s head coaching job last week.

An intense week of preparation for No. 13 Kansas State has, thus far, prevented an outward display of emotion from either of the brothers.

Bob Stoops, Oklahoma’s head coach, prefers it that way — he doesn’t want anything to interrupt the Sooners’ normal weekly routine.

“Everything is the same as it’s been for five years,” he said Friday. “(Mike) wouldn’t let me to go in there and ruin everything he’s done.”

The Stoops brothers have continually churned out some of the nation’s top defenses in five seasons in Norman.

This year’s unit, which had five players on the all-Big 12 team, including player of the year Derrick Strait, is a major reason why the Sooners are likely headed to their second national championship game in four years.

Oklahoma has the nation’s top-ranked defense (234 yards per game) and is third in scoring defense (13.2 points per game). The Sooners set a school record with 45 sacks and had a three-game span in which they didn’t allow a touchdown.

That kind of defensive dominance has kept Oklahoma in the running for the conference title nearly every year since the Stoopses arrived.

Kansas State coach Bill Snyder saw this coming, knowing it likely would mean a change in the Big 12’s hierarchy.

Snyder coached the brothers at Iowa and then hired them as assistants — Mike succeeded Bob as a co-defensive coordinator — on his staff at K-State.

“You could just see it in their blood,” Snyder said. “They’re very competitive, hard workers, guys that don’t try to skirt around the edges.”

Bob and Mike are the sons of a longtime high school coach and are two of four brothers who coach. Both were All-Big 10 defensive backs at Iowa, then moved into the coaching shortly thereafter, following similar paths en route to becoming head coaches.

Mark Stoops, a defensive backs coach at Miami, will join Mike at Arizona as a defensive coordinator.