Head to Head
| Gibraltar Open 2019 | 2017/08/18 11:30 | Ryan Day v Mark Williams | 0-5 |
| Riga Masters 2017 | 2017/06/25 12:55 | Ryan Day v Mark Williams | 5-4 |
| Championship League Snooker | 2017/02/22 15:20 | Mark Williams v Ryan Day | 3-2 |
| Championship League Snooker | 2017/02/20 17:50 | Mark Williams v Ryan Day | 2-3 |
| Championship League Snooker | 2017/01/11 13:55 | Mark Williams v Ryan Day | 3-1 |
| Gibraltar Open 2019 | 2017/01/09 19:55 | Ryan Day v Mark Williams | 2-3 |
| Gibraltar Open 2019 | 2017/01/05 10:50 | Mark Williams v Ryan Day | 1-3 |
Home History
| Gibraltar Open 2019 | 2017/10/29 06:30 | Ryan Day v Kurt Maflin | 6-5 |
| Gibraltar Open 2019 | 2017/10/17 12:00 | Luca Brecel v Ryan Day | 4-1 |
| China Championship Qualifiers 2019 | 2017/10/11 09:00 | Ryan Day v Josh Boileau | 5-1 |
| Gibraltar Open 2019 | 2017/10/03 19:20 | Peter Lines v Ryan Day | 4-2 |
| International Championship Quals | 2017/09/26 13:30 | Ryan Day v Chen Zifan | 6-1 |
| Gibraltar Open 2019 | 2017/09/20 06:00 | Joe Perry v Ryan Day | 5-0 |
| China Championship Qualifiers 2019 | 2017/09/18 06:00 | Gary Wilson v Ryan Day | 1-5 |
| Gibraltar Open 2019 | 2017/08/18 11:30 | Ryan Day v Mark Williams | 0-5 |
Away History
| Gibraltar Open 2019 | 2017/10/30 11:30 | Mark Williams v Yu Delu | 6-4 |
| Gibraltar Open 2019 | 2017/10/19 09:00 | Mark Williams v Jack Lisowski | 2-4 |
| Gibraltar Open 2019 | 2017/10/18 13:15 | Luca Brecel v Mark Williams | 1-4 |
| Gibraltar Open 2019 | 2017/10/17 18:00 | David Grace v Mark Williams | 1-4 |
| China Championship Qualifiers 2019 | 2017/10/13 13:30 | Mark Williams v Niu Zhuang | 5-2 |
| Gibraltar Open 2019 | 2017/10/06 11:00 | Mark Williams v Cao Yupeng | 2-4 |
| Gibraltar Open 2019 | 2017/10/05 11:00 | Neil Robertson v Mark Williams | 2-4 |
| Gibraltar Open 2019 | 2017/10/04 17:00 | Mark Williams v Ross Muir | 4-3 |