Head to Head
| Snooker Shoot-Out 2021 | 2021/02/07 22:45 | Mark Selby v Ryan Day | 0-1 |
| Championship League Snooker | 2019/10/09 11:00 | Mark Selby v Ryan Day | 3-0 |
| Championship League Snooker | 2019/10/08 13:45 | Mark Selby v Ryan Day | 3-2 |
| Championship League Snooker 2019 | 2019/01/10 14:00 | Ryan Day v Mark Selby | 1-3 |
| European Masters | 2018/10/04 14:25 | Mark Selby v Ryan Day | 2-4 |
| Players Championship | 2018/03/20 13:00 | Mark Selby v Ryan Day | 3-6 |
| Championship League Snooker | 2018/01/05 17:55 | Ryan Day v Mark Selby | 0-3 |
| Championship League Snooker | 2018/01/05 14:20 | Mark Selby v Ryan Day | 2-3 |
Home History
| 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 |
| WST Pro Series 2021 | 2021/03/20 13:00 | Oliver Lines v Mark Selby | 0-2 |
| WST Pro Series 2021 | 2021/03/20 11:30 | Mark Selby v Ricky Walden | 1-2 |
| WST Pro Series 2021 | 2021/03/20 10:00 | Mark Selby v Zhou Yuelong | 1-2 |
| WST Pro Series 2021 | 2021/03/14 20:10 | Mark Selby v Matthew Selt | 2-1 |
| WST Pro Series 2021 | 2021/03/14 18:40 | Mark Selby v Joe O'Connor | 2-0 |
Away History
| WST Pro Series 2021 | 2021/03/20 18:45 | Zhou Yuelong v Ryan Day | 2-0 |
| WST Pro Series 2021 | 2021/03/20 17:00 | Ryan Day v Ricky Walden | 2-1 |
| WST Pro Series 2021 | 2021/03/20 15:30 | Ryan Day v Dominic Dale | 2-0 |
| WST Pro Series 2021 | 2021/03/20 13:00 | Stuart Bingham v Ryan Day | 0-2 |
| WST Pro Series 2021 | 2021/03/20 11:30 | Judd Trump v Ryan Day | 2-1 |
| WST Pro Series 2021 | 2021/03/20 10:00 | Oliver Lines v Ryan Day | 0-2 |
| WST Pro Series 2021 | 2021/03/16 20:00 | Ryan Day v Steven Hallworth | 2-0 |
| WST Pro Series 2021 | 2021/03/16 18:30 | Judd Trump v Ryan Day | 2-0 |