Steve David and Jimmy Shane each won heat races during the first day of competition at the Diamond Cup in Coeur dAlene on Saturday.
Shane won Heat 1A driving the 5 Graham Trucking, but he got a challenge from Tom Thompson in the 11 Peters & May before hanging on to the victory.
David, in the 1 Oh Boy! Oberto, had to overcome J. Michael Kelly who was on the inside lane in the 37 Miss Beacon Plumbing to take the victory.
Racing resumes at 11 a.m. Sunday, with the final scheduled for 4 p.m.