He said he had a sexual encounter with Sypher in a Louisville restaurant six years earlier, but it was consensual. A police investigation found no evidence that there was a sexual assault.
Sypher denies trying to extort Pitino or retaliate against him for reporting her to the authorities. Prosecutors say Sypher had previously made a false sexual harrassment claim against a local businessman.
The case has generated intense media attention. Officials have taken the unusual step of setting up a special room in the courthouse during the trial to accomodate reporters. An overflow room will also available for people to listen to the trial if there are no seats in the courtroom.