The first World Superbike Championship race at Miller Motorsports Park has been halted after seven laps following an accident for Karl Muggeridge.

The Australian was running just outside the top ten when he crashed shortly into the race, the former World Supersport Champion stricken on the circuit, but conscious. Requiring some on-track medical attention, organisers chose to produce the red flag and stop the race, although Muggeridge was shown walking to the ambulance.

Up to that point, Ben Spies had been dominating, pulling out several seconds over Ryuichi Kiyonari, while Shinya Nakano is currently classified third despite falling shortly before the red flag was produced.

Carlos Checa is fourth, ahead of Michel Fabrizio and Noriyuki Haga. The big losers from the decision to red flag, and count-back to the previous lap, was undoubtedly Kawasaki pair Jamie Hacking and Broc Parkes, who had muscled their way up to fourth and fifth positions at just the wrong time.

They will restart from seventh and eighth, Parkes ahead of Hacking.