PORSCHE RACING HISTORYRoger McCluskey (USA)
1973
27 October 1973 - IROC Riverside 1 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 911 Carrera RSR | 911 460 0090 | Roger McCluskey (USA) | Roger Penske (USA) | 8th | 10th | 30 laps |
27 October 1973 - IROC Riverside 2 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 911 Carrera RSR | 911 460 0075 | Roger McCluskey (USA) | Roger Penske (USA) | 11th | 5th | 14 laps - Accident |
28 October 1973 - IROC Riverside 3 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 911 Carrera RSR | 911 460 0059 | Roger McCluskey (USA) | Roger Penske (USA) | 12th | 2nd | 8 laps - Oil Leak |