The kids may be cheering for the dinosaurs, but in bringing endurance racing ace Nick Tandy on board, the team has taken another step toward multi-class superpower status.

Following a break of over a month, the Porsche Deluxe Carrera Cup North America will close the first half of its third season at one of the nation’s most revered racetracks, Watkins Glen International. The competition at the 3.4-mile, 11-turn road course in New York state is the first time...