Head to Head
| Players Championship 2021 | 2021/02/24 13:00 | Mark Selby v Mark Williams | 6-4 |
| Championship League Snooker | 2021/02/10 13:35 | Mark Selby v Mark Williams | 2-3 |
| Championship League Snooker | 2021/02/09 18:45 | Mark Selby v Mark Williams | 3-2 |
| Championship League Snooker | 2021/02/08 18:55 | Mark Selby v Mark Williams | 3-2 |
| Players Championship 2020 | 2020/02/24 19:00 | Mark Selby v Mark Williams | 6-0 |
| China Open | 2018/04/06 06:00 | Mark Selby v Mark Williams | 6-2 |
| Championship League Snooker | 2018/03/29 13:00 | Mark Selby v Mark Williams | 3-0 |
| The Masters | 2018/01/14 13:10 | Mark Selby v Mark Williams | 5-6 |
Home History
| World Championship 2021 | 2021/04/24 18:00 | John Higgins v Mark Williams | 7-13 |
| World Championship 2021 | 2021/04/21 09:00 | Mark Williams v Sam Craigie | 10-4 |
| Championship League Snooker | 2021/04/02 19:45 | Kyren Wilson v Mark Williams | 3-2 |
| Championship League Snooker | 2021/04/02 18:05 | Graeme Dott v Mark Williams | 0-3 |
| Championship League Snooker | 2021/04/02 17:00 | Mark Williams v Zhou Yuelong | 3-1 |
| Championship League Snooker | 2021/04/02 12:30 | Judd Trump v Mark Williams | 1-3 |
| Championship League Snooker | 2021/04/02 11:30 | Mark Williams v Ali Carter | 3-1 |
| Championship League Snooker | 2021/04/01 18:35 | Mark Williams v Graeme Dott | 2-3 |
Away History
| World Championship 2021 | 2021/04/26 18:00 | Mark Allen v Mark Selby | 7-13 |
| World Championship 2021 | 2021/04/22 18:00 | Mark Selby v Kurt Maflin | 10-1 |
| Tour Championship 2021 | 2021/03/26 13:00 | Neil Robertson v Mark Selby | 10-3 |
| Tour Championship 2021 | 2021/03/24 13:00 | Mark Selby v Kyren Wilson | 10-3 |
| WST Pro Series 2021 | 2021/03/20 20:00 | Mark Selby v Ryan Day | 2-0 |
| WST Pro Series 2021 | 2021/03/20 18:45 | Mark Selby v Dominic Dale | 2-0 |
| WST Pro Series 2021 | 2021/03/20 17:00 | Stuart Bingham v Mark Selby | 2-0 |
| WST Pro Series 2021 | 2021/03/20 15:30 | Judd Trump v Mark Selby | 2-0 |