Face à face
| Indian Open 2017 | 2017/09/15 14:05 | King, Mark v Elliot Slessor | 4-2 |
| Gibraltar Open 2019 | 2017/08/26 12:15 | King, Mark v Elliot Slessor | 4-2 |
Home History
| Northern Ireland Open | 2018/11/14 15:30 | Michael Holt v King, Mark | 4-3 |
| Northern Ireland Open | 2018/11/13 10:00 | King, Mark v Astley, John | 4-0 |
| Gibraltar Open 2019 | 2018/10/30 06:30 | King, Mark v Matthew Stevens | 5-6 |
| Gibraltar Open 2019 | 2018/10/28 11:30 | Steadman, Craig v King, Mark | 3-6 |
| Gibraltar Open 2019 | 2018/10/18 12:00 | Ryan Day v King, Mark | 4-2 |
| Gibraltar Open 2019 | 2018/10/17 18:00 | King, Mark v Ebdon, Peter | 4-3 |
| Gibraltar Open 2019 | 2018/10/16 20:05 | Ashley Carty v King, Mark | 3-4 |
| International Championship 2019 | 2018/10/11 13:30 | King, Mark v Greene, Gerard | 6-5 |
Away History
| Northern Ireland Open | 2018/11/13 13:40 | Elliot Slessor v Ross Muir | 1-4 |
| Gibraltar Open 2019 | 2018/10/17 12:00 | Robert Milkins v Elliot Slessor | 4-3 |
| Gibraltar Open 2019 | 2018/10/16 12:00 | Elliot Slessor v Sean O'Sullivan | 4-2 |
| International Championship 2019 | 2018/10/09 08:30 | Mark Davis v Elliot Slessor | 6-4 |
| European Masters | 2018/10/03 13:10 | Ryan Day v Elliot Slessor | 4-3 |
| European Masters | 2018/10/02 13:50 | David Gilbert v Elliot Slessor | 3-4 |
| Gibraltar Open 2019 | 2018/08/24 11:10 | Elliot Slessor v Yong, Zhang | 3-4 |
| China Championship Qualifiers 2019 | 2018/08/19 09:00 | Martin O'Donnell v Elliot Slessor | 5-3 |