Stadium: Court 3 Round: 45 Ground: Hardcourt outdoor
| ITF Women Monastir | 2018/12/09 08:00 | Aurora Zantedeschi v Nieuwboer, Perla | 6-1,6-4 |
| ITF Women Monastir | 2018/12/03 09:30 | Adithya Karunaratne v Nieuwboer, Perla | 6-2,6-3 |
| ITF Women Monastir | 2018/12/02 10:30 | Nieuwboer, Perla v Feder, Ambre | 6-4,2-6,6-4 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/11/07 09:45 | Nieuwboer, Perla v Agustina Chlpac | 2-6,3-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/10/30 08:00 | Nieuwboer, Perla v Patrascu, Maria | 1-6,4-6 |
| Prague, Singles W-WITF-CZE-06A | 2018/09/02 09:00 | Nieuwboer, Perla v Svobodova, Monika | 3-6,2-6 |
| Prague, Singles W-WITF-CZE-06A | 2018/09/01 10:15 | Nieuwboer, Perla v Lucie Petruzelova | 7-5,6-1 |
| ITF Women Haren | 2018/08/29 09:00 | Gergana Topalova v Nieuwboer, Perla | 6-2,6-1 |
| ITF - W15 Sharm El Sheikh | 2019/01/28 08:00 | Runglerdkriangkrai, Apichaya v Washington, Amber | 6-4,3-6,5-10 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/12/05 03:00 | Momkoonthod, Tamachan v Runglerdkriangkrai, Apichaya | 6-3,6-1 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/12/03 03:45 | Runglerdkriangkrai, Apichaya v Okuno, Ayaka | 6-4,6-7,6-4 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/11/26 04:40 | Runglerdkriangkrai, Apichaya v Kezuka, Chie | 5-7,6-1,6-7 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/11/14 05:40 | Runglerdkriangkrai, Apichaya v Zhibek Kulambayeva | 1-6,1-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/11/13 02:00 | Sae-Eung, Julaluck v Runglerdkriangkrai, Apichaya | 3-6,2-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/11/12 02:00 | Sophia Bursulaya v Runglerdkriangkrai, Apichaya | 2-6,3-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/11/11 02:00 | Runglerdkriangkrai, Apichaya v Kanaphuet, Thitirat | 6-4,4-6,6-0 |