Andretti Green Racing earned is first ever American Le Mans Series overall win as James Rossiter and Franck Montagny piloted their Acura to victory in the Detroit Sports Car Challenge on Saturday on Belle Isle. The AGR pair lead an overall podium sweep for Acura. Scott Sharp and David Brabham finished second, 3.985 seconds back; Simon Pagenaud and Gil De Ferran finished third. IndyCar regular Ryan Briscoe paired with Patrick Long to finish fifth overall in their Penske Racing Porsche RS Spyder.
-- Michele Vincze