Head to Head
| UK Championship | 2018/11/29 09:30 | Xiao Guodong v Sean O'Sullivan | 6-4 |
| Indian Open 2017 | 2017/08/01 18:00 | Xiao Guodong v Sean O'Sullivan | 3-4 |
Home History
| World Grand Prix 2024 | 2024/01/17 13:00 | Noppon Saengkham v Xiao Guodong | 4-1 |
| German Masters Qualifiers 2024 | 2023/12/19 14:30 | Ian Burns v Xiao Guodong | 1-5 |
| Snooker Shoot-Out 2023 | 2023/12/06 21:55 | Louis Heathcote v Xiao Guodong | 1-0 |
| UK Championship Qualifiers 2023 | 2023/11/21 14:30 | Xiao Guodong v Mark Joyce | 2-6 |
| International Championship 2023 | 2023/11/07 11:30 | Mark Selby v Xiao Guodong | 6-2 |
| International Championship 2023 | 2023/11/06 06:30 | Jimmy Robertson v Xiao Guodong | 3-6 |
| Scottish Open Qualifiers 2023 | 2023/10/30 10:00 | Xiao Guodong v Jamie Clarke | 2-4 |
| Northern Ireland Open Qualifier 2023 | 2023/10/19 09:00 | Xiao Guodong v Yuan Sijun | 1-4 |
Away History
| German Masters Qualifiers 2024 | 2023/12/19 10:00 | Sam Craigie v Sean O'Sullivan | 5-2 |
| Scottish Open Qualifiers 2023 | 2023/12/11 10:00 | Mark Selby v Sean O'Sullivan | 4-2 |
| Snooker Shoot-Out 2023 | 2023/12/06 15:40 | Graeme Dott v Sean O'Sullivan | 1-0 |
| UK Championship Qualifiers 2023 | 2023/11/20 14:30 | David Lilley v Sean O'Sullivan | 6-3 |
| UK Championship Qualifiers 2023 | 2023/11/18 19:30 | Sean O'Sullivan v Baipat Siripaporn | 6-5 |
| Northern Ireland Open 2023 | 2023/10/25 18:00 | Shaun Murphy v Sean O'Sullivan | 4-0 |
| Northern Ireland Open 2023 | 2023/10/23 20:45 | Zak Surety v Sean O'Sullivan | 3-4 |
| Northern Ireland Open Qualifier 2023 | 2023/10/17 15:00 | Andrew Higginson v Sean O'Sullivan | 2-4 |