PORSCHE RACING HISTORYRick Mears (USA)
1981 : Watkins Glen 6 Hours - 3rd overall
1 February 1981 - Daytona 24 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720003 | GTO | Al Holbert (USA)/Rick Mears (USA)/Doc Bundy (USA) | Holbert Racing (USA) | 40th | 15th | 26th | 263 laps - Engine |
12 July 1981 - Watkins Glen 6 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 935 K3/80 | 009 00030 | Gr.5 | Rick Mears (USA)/Bob Garretson (USA)/Johnny Rutherford (USA) | Garretson Racing (USA) | 3rd | 3rd | 11th | 168 laps |