United SportsCar Championship

The TUDOR United SportsCar Championship will be 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 2014 season is scheduled to begin with the Rolex 24 Hours of Daytona.

History
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.

On January 8, 2013, the two series' announced a preliminary class structure for the new merged series. Grand-Am's Daytona Prototype category and IMSA's P2 would combine into a single class, with allowances for the unique DeltaWing to also compete in the new class. The Le Mans Prototype Challenge class of single spec cars from the American Le Mans Series would continue as is, although the cars will switch to Grand-Am's Continental Tires. The GT class of the American Le Mans Series would remain unchanged, while Grand-Am's GT class will form another GT class, and be combined with the American Le Mans GTC category. The only category of cars not represented in the new series is the American Le Mans Series' P1 category.

The reveal date for the new series was March 14, 2013 at the Chateau Élan Hotel and Conference Center at Sebring International Raceway, two days before the 12 Hours of Sebring. American Le Mans CEO Scott Atherton announced the new sanctioning body would remain IMSA while Ed Bennett revealed the new titles for the series' five classes. SME Branding Senior Partner Ed O'Hara then announced the new United SportsCar Racing title and logo, a name submitted through a contest won by Louis Satterlee of Florida.

On August 9, 2013 Fox Sports 1 announced it had signed a TV contract with IMSA to televise the entire USCC season between 2014 and 2018.

Later, on September 12, 2013, Tudor was announced as the entitlement sponsor for the series, which was named the United SportsCar Championship (overriding the previous title of United SportsCar Racing).

Class structure
There are four different classes in the United SportsCar Championship series, featuring two sports prototype categories and two grand tourer classes:
 * Prototype (P): the flagship class, combining Grand-Am Daytona Prototype with the American Le Mans Series P2 prototype and DeltaWing cars, built to 2014 specifications.
 * Prototype Challenge (PC): a spec class carried over directly from the American Le Mans Series, featuring Le Mans Prototype Challenge cars built by Oreca with engines supplied by Chevrolet and tires from Continental.
 * GT Le Mans (GTLM): a continuation of the ALMS GT class, consisting of cars matching the Automobile Club de l'Ouest's GTE specification.
 * GT Daytona (GTD): a class that combines the Grand-Am GT & GX classes with the Porsche 911 GT3 Cup cars from the ALMS GTC class. Group GT3 cars will be allowed entry into this class.