| 6 | Mickey Kessler | Carlsbad Raceway | 500MX | August 16, 1981 |
| 9 | Scott Johnson | Carlsbad Raceway | 500MX | August 16, 1981 |
| 11 | Eric McKenna | Carlsbad Raceway | 500MX | August 16, 1981 |
| 18 | Allen Berluti | Carlsbad Raceway | 500MX | August 16, 1981 |
| 19 | Kevin Davis | Carlsbad Raceway | 500MX | August 16, 1981 |
| 21 | Steve Stackable | Carlsbad Raceway | 500MX | August 16, 1981 |
| 23 | Ross Williams | Carlsbad Raceway | 500MX | August 16, 1981 |
| 10 | Allen Berluti | Washougal Motocross | 500MX | August 2, 1981 |
| 13 | Kevin Davis | Washougal Motocross | 500MX | August 2, 1981 |
| 20 | Ross Williams | Washougal Motocross | 500MX | August 2, 1981 |
| 21 | Darryl Zumstein | Washougal Motocross | 500MX | August 2, 1981 |
| 22 | Brian Thompson | Washougal Motocross | 500MX | August 2, 1981 |
| 24 | Andrew Tudor | Washougal Motocross | 500MX | August 2, 1981 |
| 5 | Alan King | RedBud Track 'n Trail | 500MX | July 5, 1981 |
| 6 | Mickey Kessler | RedBud Track 'n Trail | 500MX | July 5, 1981 |
| 10 | Denny Schwartz | RedBud Track 'n Trail | 500MX | July 5, 1981 |
| 18 | Terry Tucker | RedBud Track 'n Trail | 500MX | July 5, 1981 |
| 20 | Brian Thompson | RedBud Track 'n Trail | 500MX | July 5, 1981 |
| 22 | Ross Williams | RedBud Track 'n Trail | 500MX | July 5, 1981 |
| 3 | Alan King | Broome-Tioga Sports Center | 500MX | June 28, 1981 |
| 13 | Brian Thompson | Broome-Tioga Sports Center | 500MX | June 28, 1981 |
| 14 | Mickey Kessler | Broome-Tioga Sports Center | 500MX | June 28, 1981 |
| 26 | Ross Williams | Broome-Tioga Sports Center | 500MX | June 28, 1981 |
| 4 | Alan King | CDR Tech Track | 500MX | June 14, 1981 |
| 11 | Eric Eaton | CDR Tech Track | 250MX | June 14, 1981 |
| 12 | Kevin Davis | CDR Tech Track | 500MX | June 14, 1981 |
| 16 | Carlos Serrano | CDR Tech Track | 250MX | June 14, 1981 |
| 18 | Brian Thompson | CDR Tech Track | 500MX | June 14, 1981 |
| 20 | Chris Howard | CDR Tech Track | 250MX | June 14, 1981 |
| 22 | Andrew Tudor | CDR Tech Track | 500MX | June 14, 1981 |
| 7 | Alan King | Sunshine Speedway | 500MX | June 7, 1981 |
| 8 | Mickey Kessler | Sunshine Speedway | 500MX | June 7, 1981 |
| 10 | Carlos Serrano | Sunshine Speedway | 250MX | June 7, 1981 |
| 12 | John Reinholt | Sunshine Speedway | 500MX | June 7, 1981 |
| 15 | David Coupe | Sunshine Speedway | 250MX | June 7, 1981 |
| 19 | Mark Hutcheson | Sunshine Speedway | 500MX | June 7, 1981 |
| 21 | Brian Thompson | Sunshine Speedway | 500MX | June 7, 1981 |
| 22 | John Symons | Sunshine Speedway | 500MX | June 7, 1981 |
| 22 | Eric Eaton | Sunshine Speedway | 250MX | June 7, 1981 |
| 5 | Alan King | High Point Raceway | 500MX | May 24, 1981 |
| 12 | Eric Eaton | High Point Raceway | 250MX | May 24, 1981 |
| 13 | Carlos Serrano | High Point Raceway | 250MX | May 24, 1981 |
| 15 | Mickey Kessler | High Point Raceway | 500MX | May 24, 1981 |
| 20 | Ken Adams | High Point Raceway | 500MX | May 24, 1981 |
| 21 | David Coupe | High Point Raceway | 250MX | May 24, 1981 |
| 27 | Brian Thompson | High Point Raceway | 500MX | May 24, 1981 |
| 6 | Alan King | Moto-X 338 | 500MX | May 17, 1981 |
| 7 | Mickey Kessler | Moto-X 338 | 500MX | May 17, 1981 |
| 11 | Wemyss Scott | Moto-X 338 | 500MX | May 17, 1981 |
| 16 | John Reinholt | Moto-X 338 | 500MX | May 17, 1981 |
| 17 | David Coupe | Moto-X 338 | 250MX | May 17, 1981 |
| 19 | Eric Eaton | Moto-X 338 | 250MX | May 17, 1981 |
| 21 | Ken Adams | Moto-X 338 | 500MX | May 17, 1981 |
| 17 | Eric Eaton | Road Atlanta | 250MX | May 10, 1981 |
| 19 | Carlos Serrano | Road Atlanta | 250MX | May 10, 1981 |
| 17 | Alan King | Pontiac 2 | 250SX | April 26, 1981 |
| 8 | Alan King | Pontiac 1 | 250SX | April 25, 1981 |
| 19 | Mickey Kessler | Pontiac 1 | 250SX | April 25, 1981 |
| 17 | David Coupe | Lake Whitney Cycle Ranch | 250MX | April 12, 1981 |
| 18 | Edwin Arnet | Lake Whitney Cycle Ranch | 250MX | April 12, 1981 |
| 13 | Carlos Serrano | Saddleback Park | 250MX | April 5, 1981 |
| 14 | Edwin Arnet | Saddleback Park | 250MX | April 5, 1981 |
| 19 | David Coupe | Saddleback Park | 250MX | April 5, 1981 |
| 25 | Eric Eaton | Saddleback Park | 250MX | April 5, 1981 |
| 15 | Edwin Arnet | Hangtown Motocross Classic | 250MX | March 29, 1981 |
| 20 | David Coupe | Hangtown Motocross Classic | 250MX | March 29, 1981 |
| 22 | Eric Eaton | Hangtown Motocross Classic | 250MX | March 29, 1981 |
| 23 | Carlos Serrano | Hangtown Motocross Classic | 250MX | March 29, 1981 |
| 10 | Alan King | Houston 2 | 250SX | March 14, 1981 |
| 18 | Mickey Kessler | Houston 2 | 250SX | March 14, 1981 |
| 20 | Steve Stackable | Houston 2 | 250SX | March 14, 1981 |
| 20 | Carlos Serrano | Daytona | 250SX | March 7, 1981 |
| 16 | Alan King | Atlanta | 250SX | February 28, 1981 |
