AF Waltrip also known as AF Course-Waltrip is a former professional sportscar team. The company is as a 50–50 partnership between Michael Waltrip Racing NASCAR co-owners Michael Waltrip and Rob Kauffman. In 2011 Michael Waltrip Racing entered into a technical alliance with AF Corse to provide them sportscars to race in the FIA World Endurance Championship and Tudor United SportsCar Championship (formerly Rolex Sports Car Series). AF Course-Waltrip shut down their sportscar team in 2013 to concentrate on NASCAR.