Who knew that the University of Washington basketball backcourt this past season was one part Kentucky ready and another part Arizona capable? People would say that was a high-grade guard tandem that should have made only glorious things happen in Montlake and sent the program in a positive direction going forward after so many down years. Instead, sophomore combo guard Zoom Diallo on Wednesday announced he had committed to Kentucky, with this disclosure coming two days after freshman point guard JJ Mandaquit cast his lot with Arizona. Everyone would agree that a lot of hoop talent just left town for destinations blue blood and far more stable. Losing the 6-foot-4 Diallo was especially painful for coach Danny Sprinkle's rebuild because this Tacoma product was a local guy and the team leadership had been placed firmly in his hands. Plus he had that catchy nickname, Zoom, short for Vazoumana, which the SEC will find intriguing.…