Donal O'Sullivan
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| IRL-ch | 07/??/1949 | 0 |  Ireland |
Most Played Openings as White
| ECO | Opening | Games |
Most Played Openings as Black
| ECO | Opening | Games |
| E61 | King's Indian defence, 3.Nc3 | 1 games |
| Name: | Donal O'Sullivan |
| Federation: |  |
| Years: | 1949 - 1949 |
| Total Games: | 1 |
| Wins: | 0 (0 %) |
| Draws: | 0 (0 %) |
| Losses: | 1 (100 %) |
| Score: | 0 % |
Games played by Donal O'Sullivan
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Kennedy, P | O'Sullivan, D | 1-0  |
32 | E61 | 1949 | IRL-ch |
|