Head to Head
| Indian Open 2017 | 2017/09/14 03:40 | Xu Si v Sean O'Sullivan | 4-3 |
Home History
| China Open 2019 | 2019/04/02 11:30 | Stephen Maguire v Xu Si | 6-1 |
| Gibraltar Open 2019 | 2019/03/16 13:15 | Xu Si v Zhang Jiankang | 2-4 |
| Snooker Shoot-Out 2019 | 2019/02/21 19:15 | Xu Si v Billy Joe Castle | 0-1 |
| China Open Qual 2019 | 2019/02/18 19:00 | Thepchaiya Un-Nooh v Xu Si | 5-6 |
| Welsh Open 2019 | 2019/02/13 13:00 | Xu Si v Noppon Saengkham | 1-4 |
| Welsh Open 2019 | 2019/02/11 19:00 | Eden Sharav v Xu Si | 2-4 |
| German Masters 2019 | 2018/12/18 19:00 | Xu Si v Gerard Greene | 0-5 |
| Gibraltar Open 2019 | 2018/12/10 20:55 | Graeme Dott v Xu Si | 4-1 |
Away History
| Gibraltar Open 2019 | 2019/03/15 22:40 | Sean O'Sullivan v Yuan Sijun | 1-4 |
| Gibraltar Open 2019 | 2019/03/15 19:10 | Sean O'Sullivan v Ian Burns | 4-2 |
| Gibraltar Open 2019 | 2019/03/15 13:50 | Joe Perry v Sean O'Sullivan | 2-4 |
| Snooker Shoot-Out 2019 | 2019/02/21 15:30 | Sean O'Sullivan v Jamie Clarke | 0-1 |
| China Championship Qualifiers 2019 | 2019/02/20 10:00 | David Gilbert v Sean O'Sullivan | 6-2 |
| Welsh Open 2019 | 2019/02/11 10:00 | Sean O'Sullivan v Ken Doherty | 1-4 |
| German Masters 2019 | 2018/12/18 19:00 | Graeme Dott v Sean O'Sullivan | 5-1 |
| Gibraltar Open 2019 | 2018/12/10 09:45 | Michael Georgiou v Sean O'Sullivan | 4-3 |