Oklahoma’s Bob Stoops retires after 18 years

Oklahoma football coach Bob Stoops abruptly announced his retirement Wednesday, a stunning offseason move by the 56-year-old future Hall of Famer who led the Sooners to 10 conference championships and a national title in 18 seasons.

Offensive coordinator Lincoln Riley, 33, is being promoted to head coach, making him the youngest head coach in FBS.

Just last month, Oklahoma gave Riley a three-year contract extension worth $1.3 million per year, making him one of the highest-paid coordinators in the country.

“The time is now because Lincoln Riley will provide a seamless transition as the new head coach, capitalizing on an excellent staff that is already in place and providing familiarity and confidence for our players,” Stoops said.

Riley takes over a team that will again be the favorite to win the Big 12 and a College Football Playoff spot, with a Heisman Trophy finalist in quarterback Baker Mayfield.

Stoops was 39 when he left Florida, where he was defensive coordinator under Steve Spurrier, to take over at Oklahoma in 1999.

Stoops quickly returned Oklahoma to national prominence, winning a national championship in his second season with a win over Florida State.

Nashville police are investigating a misdemeanor assault complaint made by a man who says former Bills and Jets head coach Rex Ryan grabbed him by the neck.

Matthew Havel, a 30-year-old from Pueblo, Colo., told police that he saw the Ryan brothers — Rex and former NFL defensive coordinator Rob Ryan — at the Margaritaville restaurant in Nashville.

NASCAR issued four-race suspensions for Kyle Busch’s crew chief, tire changer and tire carrier because a tire rolled off the car last week at Dover International Speedway.