| 8 | Bryan Kenney | Saddleback Park | 500MX | December 3, 1972 |
| 10 | Gary Chaplin | Saddleback Park | 500MX | December 3, 1972 |
| 13 | Tim Hart | Saddleback Park | 500MX | December 3, 1972 |
| 4 | Gary Chaplin | Carnegie Cycle Park | 500MX | November 26, 1972 |
| 7 | Bryan Kenney | Carnegie Cycle Park | 500MX | November 26, 1972 |
| 10 | Tim Hart | Carnegie Cycle Park | 500MX | November 26, 1972 |
| 14 | Rick Graszl | Carnegie Cycle Park | 500MX | November 26, 1972 |
| 5 | Gary Chaplin | Puyallup Raceway Park | 500MX | November 19, 1972 |
| 8 | Bryan Kenney | Puyallup Raceway Park | 500MX | November 19, 1972 |
| 9 | Bryan Kenney | Arizona Cycle Park | 500MX | November 12, 1972 |
| 11 | Herbert Lee Miller | Arizona Cycle Park | 500MX | November 12, 1972 |
| 13 | Tim Hart | Arizona Cycle Park | 500MX | November 12, 1972 |
| 3 | Bryan Kenney | Carlsbad Raceway | 500MX | November 5, 1972 |
| 10 | Rick Graszl | Carlsbad Raceway | 500MX | November 5, 1972 |
| 12 | Walter Axthelm | Carlsbad Raceway | 500MX | November 5, 1972 |
| 4 | Bryan Kenney | Rio Bravo MX Park | 500MX | October 29, 1972 |
| 8 | Herbert Lee Miller | Rio Bravo MX Park | 500MX | October 29, 1972 |
| 6 | Bryan Kenney | Orlando Sports Stadium | 500MX | October 22, 1972 |
| 8 | Rick Graszl | Orlando Sports Stadium | 500MX | October 22, 1972 |
| 15 | Gary Chaplin | Orlando Sports Stadium | 500MX | October 22, 1972 |
| 4 | Bryan Kenney | Road Atlanta | 500MX | October 15, 1972 |
| 12 | Gary Chaplin | Road Atlanta | 500MX | October 15, 1972 |
| 12 | Douglas Sanger | Mid-American Motocross | 500MX | October 8, 1972 |
| 15 | Gary Chaplin | Mid-American Motocross | 500MX | October 8, 1972 |
| 16 | Rick Graszl | Mid-American Motocross | 500MX | October 8, 1972 |
| 19 | Bryan Kenney | Mid-American Motocross | 500MX | October 8, 1972 |
| 1 | Bryan Kenney | Honda Hills | 500MX | October 1, 1972 |
| 11 | Gary Chaplin | Honda Hills | 500MX | October 1, 1972 |
| 3 | Gary Chaplin | Alabama International Speedway | 500MX | September 2, 1972 |
| 4 | Herbert Lee Miller | Alabama International Speedway | 500MX | September 2, 1972 |
| 9 | Robert Latter | Alabama International Speedway | 500MX | September 2, 1972 |
| 17 | Joseph Annunziata | Alabama International Speedway | 500MX | September 2, 1972 |
| 8 | Douglas Sanger | Mid-Ohio MX Park | 250MX | July 30, 1972 |
| 9 | Bill Cook | Mid-Ohio MX Park | 250MX | July 30, 1972 |
| 14 | Paul Pfeifer | Mid-Ohio MX Park | 250MX | July 30, 1972 |
| 6 | Bill Cook | Moto-sports Racing Circus Ltd | 250MX | July 23, 1972 |
| 9 | Douglas Sanger | Moto-sports Racing Circus Ltd | 250MX | July 23, 1972 |
| 12 | Paul Pfeifer | Moto-sports Racing Circus Ltd | 250MX | July 23, 1972 |
| 5 | Douglas Sanger | Unadilla Motocross | 250MX | July 16, 1972 |
| 10 | Bill Cook | Unadilla Motocross | 250MX | July 16, 1972 |
| 9 | Tim Hart | Los Angeles Memorial Coliseum | 250MX | July 8, 1972 |
| 10 | Rich Eierstedt | Los Angeles Memorial Coliseum | 250MX | July 8, 1972 |
| 20 | Bill Cook | Los Angeles Memorial Coliseum | 250MX | July 8, 1972 |
| 18 | Robert Rush | Straddle Line Park | 250MX | July 2, 1972 |
| 3 | Bill Cook | Owyhee M/C Clubgrounds | 250MX | June 25, 1972 |
| 19 | Robert Rush | Owyhee M/C Clubgrounds | 250MX | June 25, 1972 |
| 2 | Gary Chaplin | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 4 | Rich Eierstedt | Tahoe Recreation Park | 250MX | June 18, 1972 |
| 5 | Bill Cook | Tahoe Recreation Park | 250MX | June 18, 1972 |
| 7 | Tim Hart | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 9 | John Franklin | Tahoe Recreation Park | 250MX | June 18, 1972 |
| 11 | Joel Kyne | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 12 | Walter Axthelm | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 14 | William Payne | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 16 | Ron Bass | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 17 | Dave Smith | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 18 | Dennis Law | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 19 | Richard Bungay | Tahoe Recreation Park | 500MX | June 18, 1972 |
| 4 | Eric Nelson | Snyder Park | 500MX | June 11, 1972 |
| 6 | Paul Pfeifer | Snyder Park | 500MX | June 11, 1972 |
| 7 | Stephen Zitzer | Snyder Park | 500MX | June 11, 1972 |
| 11 | Douglas Sanger | Snyder Park | 250MX | June 11, 1972 |
| 11 | Preston Thompson | Snyder Park | 500MX | June 11, 1972 |
| 12 | Robert Latter | Snyder Park | 500MX | June 11, 1972 |
| 19 | Carl Holbrook | Snyder Park | 500MX | June 11, 1972 |
| 20 | Ronald Fanaro | Snyder Park | 250MX | June 11, 1972 |
| 3 | Rich Eierstedt | Carlsbad Raceway | 250MX | May 28, 1972 |
| 7 | Gary Chaplin | Carlsbad Raceway | 500MX | May 28, 1972 |
| 8 | Greg Smith | Carlsbad Raceway | 500MX | May 28, 1972 |
| 10 | Walter Axthelm | Carlsbad Raceway | 500MX | May 28, 1972 |
| 11 | John Dallaire | Carlsbad Raceway | 250MX | May 28, 1972 |
| 11 | | Carlsbad Raceway | 500MX | May 28, 1972 |
| 12 | Dave Smith | Carlsbad Raceway | 500MX | May 28, 1972 |
| 18 | Dennis Packard | Carlsbad Raceway | 500MX | May 28, 1972 |
| 20 | Ron Bass | Carlsbad Raceway | 500MX | May 28, 1972 |
| 3 | Bill Cook | Saddleback Park | 250MX | May 21, 1972 |
| 6 | Tim Hart | Saddleback Park | 250MX | May 21, 1972 |
| 6 | Gary Chaplin | Saddleback Park | 500MX | May 21, 1972 |
| 8 | Rich Eierstedt | Saddleback Park | 250MX | May 21, 1972 |
| 8 | Dennis Packard | Saddleback Park | 500MX | May 21, 1972 |
| 10 | Walter Axthelm | Saddleback Park | 500MX | May 21, 1972 |
| 11 | Greg Smith | Saddleback Park | 500MX | May 21, 1972 |
| 15 | | Saddleback Park | 500MX | May 21, 1972 |
| 16 | John Dallaire | Saddleback Park | 250MX | May 21, 1972 |
| 17 | J Atascodero | Saddleback Park | 250MX | May 21, 1972 |
| 18 | Ron Bass | Saddleback Park | 500MX | May 21, 1972 |
| 20 | Robert Rush | Saddleback Park | 250MX | May 21, 1972 |
| 8 | Bill Cook | Cal-Expo | 250MX | May 14, 1972 |
| 9 | Greg Smith | Cal-Expo | 500MX | May 14, 1972 |
| 10 | Walter Axthelm | Cal-Expo | 500MX | May 14, 1972 |
| 19 | Robert Rush | Cal-Expo | 250MX | May 14, 1972 |
| 7 | Eric Nelson | Desoto Cycle Ranch | 500MX | May 7, 1972 |
| 10 | Douglas Sanger | Desoto Cycle Ranch | 250MX | May 7, 1972 |
| 15 | Paul Pfeifer | Desoto Cycle Ranch | 500MX | May 7, 1972 |
| 5 | Douglas Sanger | Road Atlanta | 250MX | April 16, 1972 |
| 6 | Nelson Boyer | Road Atlanta | 250MX | April 16, 1972 |
| 6 | Eric Nelson | Road Atlanta | 500MX | April 16, 1972 |
| 19 | Preston Thompson | Road Atlanta | 500MX | April 16, 1972 |
