It was three years ago Sunday that John Calipari was announced as the 22nd head coach of the University of Kentucky basketball team. The Big Blue Nation met the hiring of Calipari with overwhelming enthusiasm, which quickly turned to great expectations as the scope of the hire sunk in. Here was Calipari, who revived a moribund UMass program into a legitimate power, and elevated the Memphis Tigers into a yearly national title contender after years of dormancy…