Winkelhock, who crashed in round 10, made the most of a first lap tangle by Will Hoy and Paul Radisich to win round nine, passing Biela and his Audi team-mate, John Bintcliffe, after the safety car was withdrawn.
However, the ninth round was cut short. Burt had been tussling with Alain Menu's Renault and Rydell for fourth place when his Volvo left the track at over 120mph and hit a bank. With Burt unconscious, the race was stopped. He was taken to hospital suffering from concussion and shock.Reuse content