To Watch Tonight

What to watch after discovering a new definition of nightmare fuel ... • Boxing: Heavyweights, Jason (Hunchback) Estrada vs. Lance (The Boston Bleeder) Whitaker, in Lincoln, R.I. (9 p.m., ET) [ ESPN2] • NBA: San Antonio Spurs vs. Utah Jazz (8 p.m., ET), Dallas Mavericks vs. Los Angeles Lakers (10:30 p.m., ET). Dirk is tanned, rested and ready. [ ESPN] • Tennis: ATP/WTA Tour, Sony Ericsson Open, men's semifinals, in Key Biscayne, Fla. (7 p.m. ET, live and same-day tape). Andy Roddick vs. Nikolay Davydenko will be the live one. [ FSN]