Together with Pipo Derani, the Action Express Racing Cadillac driver holds a slender three-point advantage over Wayne Taylor Racing with Andretti Acura drivers Ricky Taylor and Filipe Albuquerque ahead of the decisive 10-hour enduro at Road Atlanta later this month.
AXR's only win of the season to date came at the Sebring 12 Hours, after a multi-car incident in the closing stages boosted the car Sims and Derani shared with third driver Jack Aitken from fourth to the lead.
