Head to Head
| WST Pro Series 2021 | 2021/03/19 17:00 | Fergal O'Brien v Mark Davis | 2-0 |
| China Championship Qualifiers 2019 | 2019/04/15 13:30 | Fergal O'Brien v Mark Davis | 4-10 |
| Welsh Open | 2017/02/16 11:40 | Mark Davis v Fergal O'Brien | 4-2 |
| Championship League Snooker | 2016/02/25 14:10 | Fergal O'Brien v Mark Davis | 1-3 |
| Championship League Snooker | 2015/01/26 13:45 | Fergal O'Brien v Mark Davis | 1-3 |
Home History
| English Open 2021 | 2021/11/02 16:15 | Mark Davis v Graeme Dott | 4-3 |
| European Masters Qualifiers 2022 | 2021/10/27 09:00 | Mark Davis v Robert Milkins | 5-3 |
| German Masters Qualifiers 2022 | 2021/10/25 13:30 | Mark Davis v Sam Craigie | 1-5 |
| German Masters Qualifiers 2022 | 2021/10/24 09:00 | Ding Junhui v Mark Davis | 4-5 |
| Scottish Open Qualifiers 2021 | 2021/09/25 17:45 | Mark Davis v Michael White | 4-3 |
| English Open Qualifiers 2021 | 2021/09/19 14:50 | Lukas Kleckers v Mark Davis | 1-4 |
| British Open 2021 | 2021/08/19 09:30 | Mark Davis v Jak Jones | 1-3 |
| British Open 2021 | 2021/08/17 18:15 | Michael Holt v Mark Davis | 2-3 |
Away History
| English Open 2021 | 2021/11/02 19:00 | Fergal O'Brien v Stuart Bingham | 4-3 |
| European Masters Qualifiers 2022 | 2021/10/28 09:00 | Robbie Williams v Fergal O'Brien | 3-5 |
| German Masters Qualifiers 2022 | 2021/10/25 18:00 | Fergal O'Brien v Ben Hancorn | 3-5 |
| Northern Ireland Open 2021 | 2021/10/11 14:05 | James Cahill v Fergal O'Brien | 4-0 |
| Scottish Open Qualifiers 2021 | 2021/09/24 12:00 | Fergal O'Brien v David Grace | 4-2 |
| English Open Qualifiers 2021 | 2021/09/22 12:00 | Fergal O'Brien v Iulian Boiko | 4-0 |
| Northern Ireland Open Qualifier 2021 | 2021/08/23 13:40 | Zhang Anda v Fergal O'Brien | 2-4 |
| British Open 2021 | 2021/08/18 13:40 | Fergal O'Brien v Gary Wilson | 0-3 |