Columbus: Al Unser / Al Unser, Jr., Holbert Racing, Porsche 962, leads Bobby Rahal / Lyn St. James, Zakspeed USA, Ford Mustang Probe.
Al Unser / Al Unser, Jr., Holbert Racing, Porsche 962, leads Bobby Rahal / Lyn St. James, Zakspeed USA, Ford Mustang Probe.