Useful Notes / United Sports Car Championship

Currently The United States's premier series for sports car endurance racing, formed in 2014 from the merger of two rival sanctioning bodies - the Rolex Sports Car Series and the American Le Mans Series.

  • Rolex was founded in 1999 under the auspices of the Grand-Am Road Racing Association, which was run by members of the NASCAR community and was eventually purchased outright by NASCAR Holdings in 2008 in an effort to more efficiently run both racing bodies. Even without this, it was always heavily tied to NASCAR due to the use of a special road course setup at Daytona International Speedway, which has hosted the 24 Hours of Daytona The organization originally bore some resemblance to the various Le Mans series run worldwide, particularly in the Prototype classes, but diverged significantly starting with the introduction of its own unique prototypes in 2003(known as Daytona Prototypes).
  • American Le Mans Series (ALMS) was also started in 1999 by Don Panoz, in partnership with Automobile Club de L'Ouest, the sanctioning body for the 24 Hours of Le Mans, which allowed it to use the exact same cars and classes as used in that race, although some classes were dropped or modified at various points in the series' existence.

The two organizations announced the merger in late 2012, and revealed the class structure for the new series in March 2013 at Sebring. The classes are as follows:

  • Prototype (P) - A class that merges the former Daytona Prototype class from the Rolex Sports Car series with current LMP 2 Prototypes found in series counterparts World Endurance Championship, European Le Mans Series, and Asian Le Mans Series.
  • GT Le Mans (GTLM) - Also carried over intact from ALMS, this is the GT class found in that series' 2013 schedule, which complies with the GTE Pro class from the World Endurance Championship, with mostly the same cars and different Balance of Performance regulations.
  • GT Daytona (GTD) - Another merger class, in this case combining the GT and GXnote  classes from Rolex with the GT Challenge class from ALMS. It currently has FIA-homologated GT 3 cars.

  • Prototype Challenge (PC) was single spec that used the Chevrolet-powered Oreca FLM09 chassis formerly used in LMP2 as well. This class was carried over intact from ALMS, and was run from the start of the series until 2017, when dwindling entries caused it to be retired.

The series was sponsored by Tudor, a "discount" watch brand owned by Rolex, which has sponsored the 24 Hours of Daytona since 1991. Current sponsorship comes from car floor mat manufacturer Weather Tech. The schedule consists of various events carried over from both the previous series, including Daytona, Sebring, the Six Hours of Watkins Glen (carried over from Rolex) and the 10 hour long Petit Le Mans at Road Atlanta (carried over from ALMS),note  which together comprise a sub-championship called the Tequila Patron North American Endurance Cup (TPNAEC). While all classes are run together at the endurance races, most of the sprint races will exclude a class.

Champions of the inaugural season are as follows:
  • P: Christian Fittipaldi and Joao Barbosa shared honors as co-drivers of the Action Express #5; they (and Sebastian Bourdais, who returned for Sebring and Petit Le Mans) were the inaugural overall race winners of the series as well, taking the first Rolex 24 under USCC sanctioning, and snagged the overall win at Indianapolis and Road America as well.
  • PC: Jon Bennett and Colin Braun, co-drivers of the #54 CORE Autosport team. The squad also took three of the four endurance events in PC (with James Gue also co-driving them, and Mark Wilkins additionally on board for Daytona), missing only Petit Le Mans. They also won the PC-only races at Kansas.
  • GTLM: Kuno Wittmer took sole honors in this class, driving the #93 SRT Motorsports team until the finale, when he drove the #91 of the same team. The team didn't win any endurance races, but won at Indianapolis and Circuit of the Americas.
  • GTD: Dane Cameron took sole honors here, driving Turner Motorsport'snote  #94, which took the class wins at Watkins Glen, Laguna Seca, Road America and VIR.

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