Tournament Record - Tom O'Brien In Irish Amateur Championship
| Played | Winner | Final | Semi-final | Quarter-final | Last 16 | Last 32 | Prize Money | Centuries |
|---|---|---|---|---|---|---|---|---|
| 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Tournament | Finish | Prize Money (GBP) |
|---|---|---|
 1945 Irish Amateur Championship |
Round 1 | 0 |
| 1945 Irish Amateur Championship |
Withdrew | 0 |
| 1943 Irish Amateur Championship |
Quarter-final | 0 |
| 1941 Irish Amateur Championship |
Semi-final | 0 |