Head to Head
| 2019 Snooker - Taça do Mundo | 2019/06/26 05:00 | Mark Allen v Fergal O'Brien | 0-1 |
| 2019 Gibraltar Open | 2017/11/15 06:30 | Fergal O'Brien v Mark Allen | 0-5 |
Home History
| Championship League Snooker | 2021/08/06 17:35 | Mark Allen v Chris Wakelin | 3-0 |
| Championship League Snooker | 2021/08/06 12:40 | Mark Allen v Mitchell Mann | 2-2 |
| Championship League Snooker | 2021/08/06 11:50 | Mark Allen v Daniel Womersley | 3-0 |
| 2021 Campeonato Mundial | 2021/04/26 18:00 | Mark Allen v Mark Selby | 7-13 |
| 2021 Campeonato Mundial | 2021/04/20 09:00 | Mark Allen v Lyu Haotian | 10-2 |
| 2021 Gibraltar Open | 2021/03/07 12:25 | Judd Trump v Mark Allen | 4-0 |
| 2021 Gibraltar Open | 2021/03/06 19:05 | Mark Allen v Ricky Walden | 4-1 |
| 2021 Gibraltar Open | 2021/03/06 14:00 | Hossein Vafaei v Mark Allen | 2-4 |
Away History
| Championship League Snooker | 2021/07/20 18:40 | Fergal O'Brien v Mark Lloyd | 3-0 |
| Championship League Snooker | 2021/07/20 14:25 | Michael Holt v Fergal O'Brien | 2-2 |
| Championship League Snooker | 2021/07/20 11:00 | Andrew Higginson v Fergal O'Brien | 2-2 |
| 2021 Campeonato Mundial - Qualificação | 2021/04/08 18:30 | Stuart Carrington v Fergal O'Brien | 6-2 |
| 2021 Campeonato Mundial - Qualificação | 2021/04/07 08:30 | Fergal O'Brien v Fergal Quinn | 6-3 |
| 2021 WST Pro Series | 2021/03/19 20:00 | Fergal O'Brien v Luca Brecel | 0-2 |
| 2021 WST Pro Series | 2021/03/19 18:30 | Fergal O'Brien v Sam Craigie | 0-2 |
| 2021 WST Pro Series | 2021/03/19 17:00 | Fergal O'Brien v Mark Davis | 2-0 |