Bertil Roos
| Runda | Tor | Data | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|
| 1 |  Lime Rock Park | 1973.05.05 | Tui BH3 - Volkswagen |  | |
| 2 | Watkins Glen | 1973.05.16 | Tui BH3 - Volkswagen | | |
| 3 | Road Atlanta | 1973.07.08 | Royale RP14 - Volkswagen | | |
| 4 | Watkins Glen | 1973.07.22 | Tui BH3 - Volkswagen | | |
| 5 | Road Atlanta | 1973.08.26 | Lola T252 - Volkswagen | | |
| 6 | Pocono | 1973.09.03 | Royale RP18 - Volkswagen | | |
| 7 | Seattle | 1973.09.30 | Lola T252 - Volkswagen | | |
| 8 | Laguna Seca | 1973.10.14 | Lola T252 - Volkswagen | | |
| 9 | Riverside | 1973.10.28 | Royale RP18 - Volkswagen | |