Richard Westbrook scored one of the most important race wins of his career in the 19th and penultimate round of the Porsche Carrera Cup GB at Donington Park yesterday. Westbrook (Red Line Racing) beat off the challenge of Jason Templeman (Team VLR) and Damien Faulkner (Motorbase Performance) to win as his title rival Tim Harvey (Team RPM) struggled home fourth with a damaged exhaust after contact early in the race. Westbrook now leads the championship by two points going into the final race.“It’s just been fantastic,” said Westbrook, still taking in the importance of the result. “I’ve just got to go out and do a clean race this afternoon. If Tim had beaten me it would have been championship over,” he added.On the opening lap, Harvey edged Westbrook back to third as Templeman took an immediate lead. However, under braking for the chicane on the second lap Westbrook dived inside Harvey to take second. “I knew I had to get him straightaway,” said Westbrook.While Westbrook now focused on Templeman, Harvey came under attack from Faulkner. Braking for the chicane on lap five, there was contact and Harvey ran wide as Faulkner took third. The incident left Harvey’s car with a bent exhaust and that was to cost him dear. “It caved in the exhaust and the engine wouldn’t pull. It’s a desperately bad result,” said Harvey after struggling home a very frustrated fourth.Westbrook, meanwhile, was exploiting his speed as the leading trio turned in a fabulous race. “I made a slight mistake into McLeans and that allowed Richard to get up the inside of me,” explained Templeman. The cars ran side by side up to Coppice where Westbrook was able to move neatly ahead. Templeman, however, soon came under pressure from Faulkner but it was another attack on Westbrook that would cost Templeman second.A chance for Templeman to re-challenge for the lead down to the Old Hairpin ended with him running wide and Faulkner bravely went around the outside as they raced up the hill to McLeans to take second on lap 12. Faulkner then challenged Westbrook, but the new championship leader was not about to let go of his most important win of the season.Fifth and sixth after excellent races were Nigel Rice (Red Line Racing) and Chris Cooper (Team Parker Racing), while Jonathan Fildes (TCR) raced through the pack to seventh after starting from the back of the grid. Meanwhile, a late clash with David Pinkney (Motorbase Performance) dropped Paul Radisich (Porsche Cars GB) to eighth place.Provisional results (15 laps):1 Richard Westbrook (Red Line Racing)                   17m59.792s2 Damien Faulkner (Motorbase Performance)          18m00.041s3 Jason Templeman (Team VLR)                       18m00.717s4 Tim Harvey (Team RPM)                               18m02.747s5 Nigel Rice (Red Line Racing)                             18m08.369s6 Chris Cooper (Team Parker Racing)                   18m13.017s7 Jonathan Fildes (TCR)                               18m16.261s8 Paul Radisich (Porsche Cars GB)                 18m21.552s9 Marcus Thomas (Team VLR)                       18m25.787s10 Jason Young (Red Line Racing)                      18m26.040s