Indy 500 Career Stats - Masten Gregory
| Starts | Total Laps | Best Start | Best Finish | Top 5 | Top 10 | Races Led | Laps Led | Winnings |
| 1 | 59 | 31 | 23 | - | - | - | - | $ 9,076 |
| Year | Finish | Start | Car # | Car Name/Entrant* | C/E/T | Qual Speed | Run/Out | Laps | Led | Winnings |
| 1965 | 23 | 31 | 41 | George R. Bryant & Staff | BRP / Ford / Firestone | 154.540 | Oil Pressure | 59 | 0 | $9,076 |










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