NORMAN — Throughout football history, lots of coaches have matched wits with former assistants who went on to lead their own teams.
Here's a sampling of notable games or series where coaching mentors and their proteges clashed.
WOODY HAYES VS. BO SCHEMBECHLER
Schembechler played for Hayes at Miami (Ohio), and was a Hayes assistant at Ohio State before becoming head coach at archrival Michigan.
Hayes and Schembechler clashed 10 times from 1969-78; the apprentice held a slight, 5-4-1 edge in the meetings.
Each season from 1999-2007, Florida State's Bobby Bowden coached against his son, Clemson coach Tommy Bowden, in what became known as the “Bowden Bowl.”
Tommy Bowden, who was once an assistant under his dad at Florida State, went 4-5 against his father.
BOB STOOPS VS. BILL SNYDER
Oklahoma coach Bob Stoops was a Kansas State assistant under Bill Snyder for seven seasons (1989-95).
Since Stoops became the Sooners' coach in 1999, he's faced Snyder's Wildcats nine times, going 7-2 in those games.
The mentor's first victory was a stunning 35-7 rout in the 2003 Big 12 championship game, which secured Snyder's first conference title. The second was this season, when K-State beat Oklahoma 24-19 in Norman.
SUPER BOWL COACHES
Two Super Bowls in the last decade have included a head coach facing one of his former assistants. Both times, the teacher topped the pupil.
In the 2003 Super Bowl, Tampa Bay crushed Oakland 48-21 to conclude Jon Gruden's first season as the Buccaneers' coach.
Bill Callahan led the Raiders; he'd been Oakland's offensive coordinator for the preceding four seasons under Gruden.
Four seasons later, Indianapolis beat Chicago 29-17; Bears coach Lovie Smith was an assistant under the Colts' Tony Dungy from 1996-2000 in Tampa Bay. The 2007 Super Bowl was also notable because Dungy and Smith became the first two African-American Super Bowl head coaches.