This weekend on TV, radio TODAY PRO BASKETBALL 7:30 p.m. -- Celtics vs. Utah at the FleetCenter, FSN, WWZN (1510) 8 p.m. -- Denver at Miami, ESPN 10:30 p.m. -- Phoenix at Seattle, ESPN BOXING 11 p.m. -- Ebo Elder vs. Courtney Burton (lightweights) at Santa Ynez, Calif., SHO COLLEGE FOOTBALL 8 p.m. -- Division 1-AA championship: James Madison vs. Montana at Chattanooga, Tenn., ESPN2 ...