| Swiss Open WD Qual | 2018/11/29 09:00 | Johnnie Torjussen v Bruno Carvalho | W | 2-1 |
| Giraldilla Int. XD | 2018/11/21 20:00 | Johnnie Torjussen v Hongyang Weng | L | 0-2 |
| Swiss Open WD Qual | 2018/11/21 14:22 | Michael Spencer-Smith v Johnnie Torjussen | W | 1-2 |
| Swiss Open WD Qual | 2018/11/21 12:30 | Johnnie Torjussen v Ben Torrance | W | 2-0 |
| Polish Int. | 2018/09/20 16:20 | Simon Sandholm v Johnnie Torjussen | W | 0-2 |
| Swiss Open WD Qual | 2018/05/10 12:00 | Johnnie Torjussen v Aryamann Tandon | L | 0-2 |
| Swiss Open WD Qual | 2018/04/12 10:45 | Johnnie Torjussen v Stijn De Langhe | W | 2-0 |
| Swiss Open WD Qual | 2018/04/12 08:35 | Johnnie Torjussen v Julien Carraggi | W | 2-0 |
| Swiss Open WD Qual | 2019/01/10 07:00 | Joonas Korhonen v Felix Hammes | W | 2-0 |
| Giraldilla Int. XD | 2018/11/29 12:30 | Luis Enrique Penalver v Joonas Korhonen | L | 2-1 |
| Giraldilla Int. XD | 2018/10/30 18:00 | Kean Yew Loh v Joonas Korhonen | L | 2-0 |
| Swiss Open WD Qual | 2018/10/30 11:45 | Eric Jr Timmerrman v Joonas Korhonen | W | 0-2 |
| Dutch Open | 2018/10/10 11:15 | Joonas Korhonen v Lucas Corvee | L | 0-2 |
| Dutch Open | 2018/10/09 16:00 | Birger Abts v Joonas Korhonen | W | 1-2 |
| Swiss Open WD Qual | 2018/10/09 09:54 | Michael Spencer-Smith v Joonas Korhonen | W | 0-2 |
| Polish Int. | 2018/09/21 08:10 | Wei Chi Liu v Joonas Korhonen | L | 2-1 |