LOUISVILLE, Ky. — Bobby Petrino's ongoing transition in his second stint as Louisville's coach coincides with other changes the program is going through.

The process continues Tuesday with the first spring practice for the Cardinals and Petrino, who replaced Charlie Strong in January after Strong took Texas' head coaching job. He takes over a team that went 23-2 the past two seasons with bowl wins in each and now aims to remain competitive as rookie members of the Atlantic Coast Conference.

Four weeks of drills will involve adjustments on both sides of the ball for Petrino but his biggest comes on offense, where he must replace star quarterback Teddy Bridgewater and install his pass-oriented philosophy. The Cardinals' defense meanwhile must replace seven starters while switching to a 3-4 formation.