| 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 |
| Giraldilla Int. XD | 2018/04/13 13:20 | Joonas Korhonen v Toby Penty | L | 0-2 |
| Polish Int. | 2018/09/21 07:00 | Dinuka Karunaratna v Felix Hammes | L | 2-0 |
| Polish Int. | 2018/09/20 15:10 | Felix Hammes v Mark Brady | W | 2-1 |
| Polish Int. | 2018/09/20 08:45 | Robert Cybulski v Felix Hammes | W | 0-2 |
| Giraldilla Int. XD | 2017/04/12 09:56 | David Jones v Felix Hammes | L | 2-1 |