| All England Open | 2018/09/19 04:00 | Mark Caljouw v Suppanyu Avihingsanon | L | 0-2 |
| All England Open | 2018/09/13 05:30 | Mark Caljouw v Khosit Phetpradab | L | 0-2 |
| All England Open | 2018/09/11 03:30 | Tzu Wei Wang v Mark Caljouw | W | 0-2 |
| Giraldilla Int. XD | 2018/08/29 14:10 | Victor Svendsen v Mark Caljouw | L | 2-0 |
| All England Open | 2018/07/30 04:30 | Dan Lin v Mark Caljouw | L | 2-0 |
| Indonesia Open | 2018/07/04 06:00 | Mark Caljouw v Anthony Sinisuka Ginting | L | 0-2 |
| Giraldilla Int. XD | 2018/06/21 22:30 | Guangzu Lu v Mark Caljouw | L | 2-0 |
| Giraldilla Int. XD | 2018/06/20 18:30 | Hashiru Shimono v Mark Caljouw | W | 1-2 |
| Dutch Open | 2018/10/09 17:20 | Valeriy Atrashchenkov v Jacob Nilsson | W | 0-2 |
| Giraldilla Int. XD | 2018/09/13 08:30 | Thomas Rouxel v Jacob Nilsson | L | 2-1 |
| Giraldilla Int. XD | 2018/08/29 08:10 | Thomas Rouxel v Jacob Nilsson | L | 2-0 |
| Giraldilla Int. XD | 2018/06/20 19:50 | Max Weisskirchen v Jacob Nilsson | L | 2-0 |
| US Open | 2018/06/14 02:30 | Khosit Phetpradab v Jacob Nilsson | L | 2-0 |
| Giraldilla Int. XD | 2018/05/12 09:00 | Jacob Nilsson v Toby Penty | L | 0-2 |
| Giraldilla Int. XD | 2018/05/11 15:31 | Jan Louda v Jacob Nilsson | W | 0-2 |
| Swiss Open WD Qual | 2018/05/11 14:00 | Jan Louda v Jacob Nilsson | W | 0-2 |