John Duff Indianapolis 500 Stats
| Starts | Total Laps | Poles | Wins | Top 5 | Top 10 | Races Led | Laps Led | Winnings |
| 1 | 147 | 0 | 0 | 0 | 1 | 0 | 0 | $1,500 |
| Year | Finish | Start | Car Num. | Car Name / Entrant | Make / Model | Qual. Speed | Status | Laps | Led | Winnings |
| 1926 | 9 | 28 | 18 | Elcar | Miller / Miller / Firestone | 95.546 | Running | 147 | 0 | $1,500 |