Stadium: Hard 6 Round: 54 Ground: Clay
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/09/25 07:30 | Casteleyn, Emily v Chantal Sauvant | 3-6,6-1,4-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/09/24 07:30 | Di Battista, Elena v Casteleyn, Emily | 2-6,1-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/09/23 09:30 | Yaniklar, Beyza v Casteleyn, Emily | 1-6,1-6 |
| ITF Women Wanfercee-Baulet | 2018/08/21 15:55 | Eliessa Vanlangendonck v Casteleyn, Emily | 6-4,6-2 |
| ITF Women Wanfercee-Baulet | 2018/08/20 07:30 | Issler, Maja v Casteleyn, Emily | 6-1,5-7,3-6 |
| ITF Women Oldenzaal | 2018/08/12 09:30 | Casteleyn, Emily v Dijkman, Dewi | 6-4,5-7,5-7 |
| Koksijde, Singles W-WITF-BEL-04A | 2018/08/04 10:00 | Casteleyn, Emily v Chantraine, Catherine | 3-6,1-6 |
| ITF Women Brussels Qual | 2018/07/16 12:15 | Maria Vittoria Viviani v Casteleyn, Emily | 6-2,6-2 |
| Shymkent, Singles W-WITF-KAZ-08A | 2018/09/15 05:00 | Aliyeva, Laylikhon v Sokhetskaya, Sofia | 1-6,1-6 |
| ITF Women Andijan Qual | 2018/05/26 06:30 | Urzhumova, Valeriya v Aliyeva, Laylikhon | 6-0,6-0 |