PORSCHE RACING HISTORYTom Masterson (USA)
1976
2 May 1976 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 26 | Porsche 911 S | GTU | Tom Masterson (USA) | Max Dial Porsche/Audi (USA) | 24th | 8th | 29th | 45 laps |
3 October 1976 - Laguna Seca 100 Miles II - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 26 | Porsche 911 S | GTU | Tom Masterson (USA) | Tom Masterson (USA) | 28th | 7th | 37th | 45 laps |