The WeatherTech SportsCar Championship is campaigned in the United States and Canada and organized by the International Motor Sports Association (IMSA). It results from a merger between two previous North American sports car racing series, the American Le Mans Series and Rolex Sports Car Series. From 2013 through 2015 the series was sponsored by Rolex’s Tudor brand; starting in 2016 the title sponsor is WeatherTech.
The series consists of twelve endurance races — eleven in the US and one in Canada (at Canadian Tire Motorsports Park) — plus a test session each January called The Roar Before the 24, leading up to the season’s first race — the Rolex 24 At Daytona.
Some races run only select classes of cars. For example, while all classes contest the Rolex 24, the Grand Prix of Long Beach permits only Prototype (P) and GT Le Mans (GTLM) entries.
Multimatic Motorsports supplies cars and support to the US-based Ford Chip Ganassi Racing team, which competes in the GT Le Mans (GTLM) category with the following two cars and associated driver lineups:
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