The Tudor United SportsCar Championship (TUSCC) is a sports car racing series based in the United States and Canada and organized by the International Motor Sports Association (IMSA).

It is a result of a merger between two existing North American sports car racing series, the American Le Mans Series and Rolex Sports Car Series. The initial name of the series was announced on March 14, 2013, while Rolex SA signed their Tudor brand to a five-year title sponsorship deal.

The inaugural 2014 season began with the Rolex 24 Hours of Daytona on January 25–26 and ended with the Petit Le Mans on October 4. João Barbosa and Christian Fittipaldi with Action Express Racing claimed both the drivers' and team championships. Chevrolet won the manufacturer's championship.

On September 5, 2012 it was announced that the Grand-Am Road Racing sanctioning body would be merging with the Braselton based International Motor Sports Association, and as such both bodies would be merging their premiere sports car series, the Rolex Sports Car Series and American Le Mans Series respectively, with plans to debut in 2014.

On November 20, 2012 the merger committee announced that SME Branding were selected to develop the name, logo and identity of the new series.

The IMSA TUDOR SportsCar Championship features two (2) styles of cars, Prototype and GT (Grand Touring). Each style of car has two (2) classes, Pro and Pro-Am, meaning there are four (4) classes of racing on track together, each with their own battle for the lead.

The Pro classes typically feature a professional driver line up while the Pro-Am classes pair a professional driver and amateur driver.

To help fans easily identify a class of car, the IMSA WeatherTech SportsCar Championship implemented a new color system. A Pro class is designated by RED markings on the number panel, mirror, windscreen banner, rear wing end plate, class decal, and leader light.

A Pro-Am class is designated by BLUE markings on the number panel, mirror, windscreen banner, rear wing end plate, class decal, and leader light.

The Tequila Patrón North American Endurance Cup is a unique four-race competition encompassing the marquee endurance races on the IMSA WeatherTech SportsCar Championship schedule.  The winners in each of the four classes (Prototype, Prototype Challenge, GT Le Mans and GT Daytona) are awarded points at specific intervals for drivers, teams and manufacturers.

• ROUND 1 - For the Rolex 24 At Daytona, points are awarded at six hours, 12 hours, 18 hours, and at the finish.
• ROUND 2 - At the Mobil 1 Twelve Hours of Sebring Fueled by Fresh From Florida, points are awarded at four hours, eight hours and at the finish.
• ROUND 3 - At the Sahlen’s Six Hours of The Glen, points are awarded at three hours and at the finish.
• ROUND 4 - At Petit Le Mans, points are awarded at four hours, eight hours and at the finish.

This distinguished endurance competition features 52 hours of racing at North America’s most prestigious endurance racing events. A purse of $300,000 is awarded to the champions of the Patrón Endurance Cup with $100,000 going to the Prototype (P) and GT Le Mans (GTLM) championship-winning teams and $50,000 going to the Prototype Challenge (PC) and GT Daytona (GTD) championship-winning teams.

Sports fans can only dream of standing in the huddle at a professional football game or sitting in a Major League Baseball dugout.

Yet in sports car racing, the spectators become part of the action throughout an event weekend, right up until the green flag waves to start the competition at a typical IMSA WeatherTech SportsCar Championship event.

The WeatherTech Championship provides a fan-friendly atmosphere where spectators enjoy unparalleled access to the cars, drivers and competitors throughout a typical race weekend in the open paddock area.

Fans have the opportunity to tour the paddock– where they can see crews prepare their cars for practice, qualifying and racing. They can take photographs and talk with participants throughout the race weekend.

All of the IMSA WeatherTech SportsCar Championship drivers also participate in an organized autograph session at each event. They are happy to sign programs or a special memento from the weekend – although many of the teams will have souvenir postcards for the drivers to autograph.

Many of the venues hosting the IMSA WeatherTech SportsCar Championship also offer open seating. This allows fans to explore and experience the race from many different locations.

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