Stadium: Court 4 Round: 44 Ground: Clay
| ITF W15 Knokke | 2021/07/26 12:30 | Perla Nieuwboer v Laura Boehner | 6-0,6-3 |
| ITF W60 Amstelveen | 2021/07/05 08:00 | Perla Nieuwboer v Tayisiya Morderger | 0-6,0-6 |
| ITF W25 The Hague | 2021/06/27 08:00 | Daniela Vismane v Perla Nieuwboer | 6-4,6-1 |
| ITF W15 Alkmaar | 2021/06/21 15:00 | Elena Jamshidi v Perla Nieuwboer | 2-6,6-2,14-12 |
| ITF W15 Alkmaar | 2021/06/20 14:30 | Sevil Yuldasheva v Perla Nieuwboer | 1-6,4-6 |
| ITF W15 Antalya | 2021/06/15 09:30 | Perla Nieuwboer v Christina Rosca | 2-6,1-6 |
| ITF W15 Antalya | 2021/06/14 07:30 | Perla Nieuwboer v Vanessa I G Popa Teiusanu | 2-6,6-4,10-5 |
| ITF W15 Antalya | 2021/06/13 07:30 | Perla Nieuwboer v Duru Soke | 4-6,6-4,10-6 |
| ITF W15 Knokke | 2021/07/26 13:00 | Chiara Tomasetti v Laure Line Glaude | 6-3,6-3 |
| ITF W15 Knokke | 2021/07/25 10:00 | Chiara Tomasetti v Andreea Alexandra Lila | 6-1,7-6 |
| ITF Women Essen Qual | 2018/06/10 10:30 | Chiara Tomasetti v Dasha Ivanova | 3-6,2-6 |