WOLVERHAMPTON'S Grand Prix duo Niels Kristian Iversen and Freddie Lindgren are facing a race to be fit for Saturday's meeting in Latvia after crashing out of the mid-week defeat at Belle Vue.
Iversen sustained a dislocated shoulder for the second time this season - but it was put back at the track.
Wolves owner Chris Van Straaten said: "Niels is trying to get back to Denmark on Thursday to consult his local specialist before making a decision for the weekend. He had superb medical treatment at the track."
Lindgren crashed in Heat 15 and is complaining of pain in his hand and wrist.
"He feels battered and bruised but he was talking about travelling to Latvia," said Van Straaten. "Naturally there has to be some concern there."