LOUISVILLE, Ky. >> Escort Katina Powell broke her silence on Tuesday, saying she has no proof that Louisville men's basketball coach Rick Pitino knew that a former Cardinals staffer hired her and other dancers to strip and have sex with former recruits and players.But Powell said in an interview initially aired on ABC's "Good Morning America" that with "a boatload" of recruits and dancers, "loud music, alcohol, security, cameras" in a campus dormitory, "how could Rick not know?"In her first interview since the release of her book earlier this month, "Breaking Cardinal Rules: Basketball and the Escort Queen," Powell spoke with ESPN's "Outside the Lines," part of which was aired on the ABC morning show and all day on the sports network.