Will Diefenbach Grand-Am Rolex Series results at Laguna Seca
Back to Will Diefenbach career stats
| Year | Race # | Start | Finish | Class | Class Rank | Car # | Team | Engine | Owner | Qualifying Time | Laps | X Led | Laps Led | Points |
| 2005 | 4 | 48 | 43 | GT | 21 | 56 | Sunset Chevrolet, Sumner, WA | Chevrolet Corvette | Beachman | 1:41.014 | 84 | 0 | 0 | 10 |
