Houston, TX
Rio Bravo MX Park
- August 5, 1979
- April 23, 1978
- June 26, 1977
- August 22, 1976
- April 25, 1976
- November 4, 1973
- October 29, 1972
All-Time Wins
450 Class
| Rider | Hometown | Wins |
|---|---|---|
 Brad Lackey |  Lafayette, CA | 1 |
 Jim Weinert | Middletown, NY | 1 |
| Tony DiStefano | Bristol, PA | 1 |
 Bob Hannah | Whittier, CA | 1 |
| Rex Staten | Fontana, CA | 1 |
250 Class
| Rider | Hometown | Wins |
|---|---|---|
 Broc Glover | El Cajon, CA | 2 |
| Danny Laporte | Yucca Valley, CA | 1 |
 Mark Barnett | Bridgeview, IL | 1 |