The International Motor Sports Association (IMSA) is a North American sports car racing sanctioning body based in Daytona Beach, Florida, under the jurisdiction of the ACCUS arm of the FIA. It was started by John Bishop, a former executive director of SCCA, and his wife Peggy in 1969 with help from Bill France Sr. of NASCAR. Beginning in 2014, IMSA is the sanctioning body of the WeatherTech SportsCar Championship, the premier series resulting from the merger of Grand-Am Road Racing and the American Le Mans Series. IMSA is owned by NASCAR, as a division of the company.
Krohn Racing is a professional sports car racing team based in Houston, Texas. The team competes in the IMSA TUDOR United SportsCar Championship Prototype class, and has competed in the FIA World Endurance Championship, Intercontinental Le Mans Cup GTE-Amateur class; the American Le Mans Series GT2 class; and the Rolex Sports Car Series Daytona Prototype class.
Guy James Mutlow Smith is a British professional racing driver, who has competed in various levels of motorsport, most notably the 24 Hours of Le Mans, which he won in 2003, and the American Le Mans Series, which he won in 2011.
Jan Heylen is a championship-winning Belgian racing driver, based out of Tampa, Florida.
Jörg Bergmeister is a former racing driver from Germany and an ambassador of Porsche.
Sascha Maassen is a veteran sports car driver.
Richard Westbrook is a British professional racing driver noted for his success in racing Porsche and International sports cars. As a junior, he attended St Joseph's College, Ipswich. He has won both the Porsche Supercup international championship and the Porsche Carrera Cup in his native Britain (2004). At the end of the 2007 season, Richard signed a factory contract deal with the German marque Porsche, and the British ace proceeded to take on the world's best on the other side of the Atlantic. The next year (2009), Westbrook won the highly coveted FIA GT2 Championship, taking four victories in the process, establishing himself firmly on the World motor sport stage and in the upper echelons of elite sports car drivers.
The Racer's Group, or TRG, is a WeatherTech SportsCar Championship racing team located in Petaluma, California, owned by Kevin Buckler and his wife Debra. TRG has competed professionally in road racing since 1995. The team formerly competed in NASCAR as TRG Motorsports from 2007 to 2011.
Alex Job Racing is a former professional sports car racing team based in the United States. The team, which is noted for its long-time association with Porsche, has competed in the American Le Mans Series, the IMSA GT3 Cup Challenge series, and the Rolex Sports Car Series, and fields a two-car effort in the Tudor United SportsCar Championship. On November 22, 2017, it was announced that Alex Job Racing will cease its professional racing operations to focus on its historic restoration and competition business.
Johnny Mowlem is a professional British racing driver. During his career Mowlem was ranked amongst the best sports car/GT drivers in the world. Mowlem famously fell off his chair whilst commentating at the 2023 Le Mans 24hr race, having competed in every class of world championship sports car racing.
João Ricardo da Silva Coelho Barbosa is a Portuguese auto racing driver. He currently competes in the IMSA WeatherTech SportsCar Championship for Sean Creech Motorsport in the LMP2 class.
Thomas "Tommy" Erdos is a Brazilian auto racing driver. A two-time Le Mans Series champion and 24 Hours of Le Mans winner in LMP2, he has raced for most of his career in Great Britain and Europe, where he currently resides in Buckinghamshire, England.
Darren Law is an American racing driver.
Joseph Alan Hand is an American professional racing driver who competes in sports car racing as a Ford factory driver. A former champion of the Star Mazda Series, Hand is the co-winner of the 2011 24 Hours of Daytona driving for Chip Ganassi Racing, the 2012 12 Hours of Sebring GT class for BMW Team Rahal, and the 2016 24 Hours of Le Mans LMGTE Pro class for Ford Chip Ganassi Team USA driving the Ford GT. He competes part-time in the NASCAR Cup Series, driving the No. 60 Ford Mustang Dark Horse for RFK Racing.
Mike Rockenfeller, nicknamed "Rocky", is a German professional racing driver and was an Audi factory driver competing in the DTM and the FIA World Endurance Championship. He won his first DTM title in 2013, driving for Audi Sport Team Phoenix. He also won the 2010 24 Hours of Le Mans.
The 2014 United SportsCar Championship was the inaugural season of the International Motor Sports Association's new series created out of a merger of the Rolex Sports Car Series and the American Le Mans Series and the first to be held under the name as the United SportsCar Championship. It began with the 24 Hours of Daytona, the first time since the 1997 IMSA GT Championship season that IMSA sanctioned an event at Daytona International Speedway on 25 January and ended on 4 October at Petit Le Mans. It was the 44th overall season of IMSA GT championship racing tracing its lineage to the 1971 IMSA GT Championship.
Guy Andrew Cosmo is an American racing driver who competes in the United SportsCar Championship. He is a former American Le Mans Series Rookie-of-the-Year winner who claimed four wins and multiple podium finishes in ALMS competition.
Gabriele Gardel is a Swiss former racing driver. Having competed in sports cars for most of his career, Gardel won the 2005 FIA GT Championship driver's title, and took home two class victories at the 24 Hours of Le Mans in 2010 and 2011.
Action Express Racing (AXR) dba Whelen Cadillac Racing for the 2024 season is a sports car racing team that currently competes in the IMSA WeatherTech SportsCar Championship. The team is owned by NASCAR CEO Jim France and run by Bob Johnson and former NASCAR champion crew chief Gary Nelson. Based in Denver, North Carolina, the team currently fields the No. 31 Whelen Engineering Cadillac V-LMDh for Jack Aitken, Earl Bamber and Frederik Vesti.
William Ryan Johnson is an American professional sports car and stock car racing driver. He is the 2016 IMSA Continental Tire Sports Car Challenge GS champion. He currently competes part-time in the WeatherTech SportsCar Championship and FIA World Endurance Championship, driving for Ford Chip Ganassi Racing UK in the No. 66 Ford GT.
