Head to Head
| World Grand Prix 2024 | 2024/01/16 19:00 | Mark Williams v Thepchaiya Un-Nooh | 4-3 |
| Snooker Shoot-Out 2021 | 2021/02/07 19:00 | Mark Williams v Thepchaiya Un-Nooh | 1-0 |
| Six Red World Championship 2019 | 2019/09/02 11:30 | Mark Williams v Thepchaiya Un-Nooh | 5-2 |
| Paul Hunter Classic 2019 | 2018/09/03 06:28 | Mark Williams v Thepchaiya Un-Nooh | 5-1 |
| Gibraltar Open 2019 | 2018/04/02 06:30 | Thepchaiya Un-Nooh v Mark Williams | 1-6 |
| Players Championship | 2015/03/25 13:45 | Mark Williams v Thepchaiya Un-Nooh | 4-1 |
| Shanghai Masters | 2014/08/15 18:00 | Mark Williams v Thepchaiya Un-Nooh | 5-3 |