Live sporting events on television change in possible FRIDAY 7:55 a.m. ESPNU — Formula One Racing: Belgian Grand Prix Practice 8 a.m. TVG — International Racing, horse racing from Great Britain and Ireland 8:30 a.m. Golf — European Tour Golf: Omega European Masters 11 a.m. ESPN — U.S. Open Tennis: Third Round Noon Golf — Korn Ferry Tour Golf: Korn Ferry Tour Championship 1 p.m. NBCSN —…