September 6, 1987	Nissan Grand Prix of San Antonio	San Antonio Street Course, San Antonio, TX	IMSA GTP/Lights	Chip Robinson Derek Bell Al Holbert
September 4, 1988	Nissan Grand Prix of San Antonio	San Antonio Street Course, San Antonio, TX	IMSA GTP/Lights	James Weaver Price Cobb
September 3, 1989	Nissan Grand Prix of San Antonio	San Antonio Street Course, San Antonio, TX	IMSA GTP/Lights	Chip Robinson
September 3, 1989		San Antonio Street Course, San Antonio, TX	IMSA GTO/GTU	Wally Dallenbach Jr.
September 2, 1990		San Antonio Street Course, San Antonio, TX	IMSA GTO/GTU/AAC	Pete Halsmer
September 2, 1990	Nissan Grand Prix of San Antonio	San Antonio Street Course, San Antonio, TX	IMSA GTP/Lights	Juan Manuel Fangio II