| 17 | Motocross West | 250MX 450 Class | September 9, 1973 | CZ |
| 9 | Alabama International Speedway | 250MX 450 Class | September 1, 1973 | Bultaco |
| 8 | Cycle-Rama Recreational Park | 250MX 450 Class | August 26, 1973 | CZ |
| 20 | Meaning Cycle Park | 250MX 450 Class | July 1, 1973 | CZ |
| 8 | Lake Whitney Cycle Ranch | 250MX 450 Class | June 17, 1973 | CZ |
| 6 | Cycle Trails Moto Park | 250MX 450 Class | June 10, 1973 | CZ |
| 3 | Road Atlanta | 250MX 450 Class | June 2, 1973 | Yamaha |
| 8 | Road Atlanta | 250MX 450 Class | June 2, 1973 | CZ |
| 3 | Desoto Cycle Ranch | 250MX 450 Class | May 20, 1973 | CZ |
| 15 | Desoto Cycle Ranch | 500MX 500MX | May 20, 1973 | Maico |
| 5 | Opelousas, LA | 250MX 450 Class | May 6, 1973 | CZ |
| 18 | Daytona International Speedway | 250MX 450 Class | March 10, 1973 | CZ |
| 2 | Alabama International Speedway | 250MX 450 Class | September 2, 1972 | CZ |
| 14 | Road Atlanta | 250MX 450 Class | April 16, 1972 | CZ |
