Head to Head
| Indian Open 2017 | 2017/08/01 18:00 | Xiao Guodong v Sean O'Sullivan | 3-4 |
Home History
| Northern Ireland Open | 2018/11/15 10:00 | Ali Carter v Xiao Guodong | 4-2 |
| Northern Ireland Open | 2018/11/14 10:00 | Sunny Akani v Xiao Guodong | 3-4 |
| Northern Ireland Open | 2018/11/12 10:00 | Xiao Guodong v Harvey Chandler | 4-3 |
| Gibraltar Open 2019 | 2018/10/30 11:30 | Xiao Guodong v Yuan Sijun | 1-6 |
| Gibraltar Open 2019 | 2018/10/28 06:30 | Fan Zhengyi v Xiao Guodong | 2-6 |
| Gibraltar Open 2019 | 2018/10/16 18:00 | Xiao Guodong v Steven Hallworth | 2-4 |
| International Championship - Qualifikation | 2018/10/09 08:30 | Xiao Guodong v Lukas Kleckers | 6-1 |
| Gibraltar Open 2019 | 2018/09/26 06:30 | Xiao Guodong v Shaun Murphy | 2-5 |
Away History
| Northern Ireland Open | 2018/11/14 19:30 | Sean O'Sullivan v Sanderson Lam | 3-4 |
| Northern Ireland Open | 2018/11/13 13:35 | Andy Lee v Sean O'Sullivan | 1-4 |
| Gibraltar Open 2019 | 2018/10/16 12:00 | Elliot Slessor v Sean O'Sullivan | 4-2 |
| International Championship - Qualifikation | 2018/10/09 13:30 | Matthew Selt v Sean O'Sullivan | 6-0 |
| Gibraltar Open 2019 | 2018/08/24 07:30 | Sean O'Sullivan v Brian Cini | 0-4 |
| China - Meisterschaft - Qualifikation 2019 | 2018/08/19 18:00 | Mark Allen v Sean O'Sullivan | 5-2 |
| European Masters Qualifiers | 2018/08/17 12:00 | Joe Perry v Sean O'Sullivan | 4-0 |
| Indian Open 2018 | 2018/08/16 12:00 | Mark Davis v Sean O'Sullivan | 4-1 |