International Race of Champions, better known as IROC, was an auto racing competition, promote as an equivalent of an All-Star Game or The Masters. Drivers raced identically-prepared stock cars set up by a single team of mechanics in an effort to make the race purely a test of driver ability. It was run with a small field of invited drivers (6-12). It was created in 1973 by Riverside International Raceway President Les Richter, Roger Penske and Mike Phelps, with Mark Donohue being the first driver to win the championship, in 1974. The cars used that year were Porsche Carrera RSRs. Donohue's win in the fourth and last race of that season was his last win as he died in a Formula One practice the next season. The series was not run in 1981, 1982, 1983 or 2007.