Bobby Petrino believes he made the most of his small recruiting window since taking over as Louisville's coach last month.

The Cardinals announced a 21-player class including former Penn State quarterback Tyler Ferguson, who's transferring after one season with the Nittany Lions. He'll redshirt this fall but will have two years of eligibility remaining with a Cardinals program that joins the Atlantic Coast Conference next season.

Ferguson is one of two quarterbacks among 12 offensive players signed by Petrino, who likes the spread formation. The Cardinals also landed dual threat Reggie Bonnafon from Trinity High School.

"We had a short period of time, and we were able to go out and make some good relationships," Petrino said Wednesday. "We had some tough decisions to make, and then we were able to find some new players to recruit, which became real critical at the end of the recruiting phase. ...

"I'm very excited about what we were able to put together."

Louisville tapped into south Florida's deep talent pool again with five recruits including Sharieff Rhaheed-Muhammad, a 6-foot-3, 215-pound linebacker from Fort Pierce Central High. Scout.com rates him as a three-star prospect.

Louisville's class is ranked 46th in the nation by Rivals.com and 45th by Scout.com.