The last five laps of the race then saw a close battle between Corser and Toseland for the on track third place. They swapped places and paint as they tried to out do each other.
Corser said: "I knew I was ahead of James on time but I wanted the third place on track, that is the racer in me. But I decided to settle for fourth on track."
"It was bloody hot out there and hard work. The Ducati was just too strong to stay with," added Vermeulen, who is now lying second in the championship after his safe second.
The Petronas garage had one good result and one DNF when McCoy had a mechanical four laps from the end, whilst Steve Martin came home in eleventh. Chris Walker on the PSG-1 Kawasaki had another ding dong fight with Frankie Chili on the Klaffi Honda. Walker had predicted this at the start of the weekend and he was determined to try and beat him, however Chili got the better of him and finished seventh with Walker eighth.
Results - race one: