Stadium: Court 10 Round: 62
| ITF Women Den Haag Qual | 2018/07/01 10:30 | Dijkman, Dewi v Cavero Roeper, Ana Jocelijn | 6-2,6-2 |
| ITF Women Den Haag Qual | 2018/06/30 09:30 | Madison Bourguignon v Dijkman, Dewi | 5-7,2-6 |
| ITF Women Alkmaar | 2018/06/24 09:00 | Dijkman, Dewi v Stevens, Lexie | 0-6,0-6 |
| ITF Women Alkmaar | 2018/06/23 08:00 | Dijkman, Dewi v Colard, Juliette | 6-3,1-6,7-5 |
| ITF Women Kaltenkirchen | 2018/06/17 08:30 | Dijkman, Dewi v Colard, Juliette | 5-7,6-4,4-6 |
| s-Hertogenbosch, Netherlands, Qualifying | 2018/06/09 09:20 | Valentini Grammatikopoulou v Dijkman, Dewi | 6-3,6-1 |
| Cairo, Singles W-WITF-EGY-02A | 2017/12/03 08:30 | Dijkman, Dewi v Klymenko, Anastasiya | 2-6,3-6 |
| ITF Women Hammamet | 2017/11/01 12:25 | Eklund, Mia v Dijkman, Dewi | 6-0,6-1 |
| ITF Women Den Haag Qual | 2018/07/01 08:00 | Pool, Elysia v Nieuwboer, Perla | 7-5,1-6,0-6 |
| ITF Women Den Haag Qual | 2018/06/30 07:00 | Nieuwboer, Perla v Meers, Zoi | 6-2,6-1 |
| ITF Women Alkmaar | 2018/06/24 09:00 | Ilowska, Caroline v Nieuwboer, Perla | 6-1,6-4 |