Sunday 28th February 1971
A.J. Foyt won the 500 mile NASCAR GN race at Ontario Motor Speedway, Ontario, CA. Foyt drove the Wood Brothers Mercury past Buddy Baker with 14 laps left and crossed the finish line 8.5 seconds in front of Baker’s Petty Dodge. 51 cars took the green flag starting three-abreast in the first NASCAR race on the 2.5 mile OMS oval.