| Irish Open Qual | 11/15 17:10 | - | O Brien, Jack Joseph v Heng Lin Ngan | L | 0-2 | |
| Irish Open Qual | 11/15 15:25 | - | O Brien, Jack Joseph v Harper Leigh | W | 2-0 | |
| Irish Open Qual | 11/15 11:20 | - | Ewen Stephen v O Brien, Jack Joseph | W | 0-2 | |
| Others | 08/26 11:32 | - | O Brien, Jack Joseph v Jonas Petkus | D |
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| Irish Open Qual | 11/13 16:30 | - | Yang Yang v O Brien, Jack Joseph | L | 2-0 | |
| Irish Open Qual | 11/13 10:00 | - | Patil, Arnav v O Brien, Jack Joseph | W | 0-2 | |
| Lithuanian Int. Qual | 06/06 08:20 | - | Brian Holtschke v O Brien, Jack Joseph | L | 2-0 | |
| Latvia Int. Qual | 05/30 14:00 | - | Markus Barth v O Brien, Jack Joseph | L | 2-0 |