Stadium: OLEVRA Round: 25
| ITF Women Den Haag | 2018/07/05 08:00 | Jarlskog, Ida v Pirazhenka, Sviatlana | 6-7,7-5,6-2 |
| ITF Women Den Haag | 2018/07/03 08:00 | Stephanie Judith Visscher v Pirazhenka, Sviatlana | 4-6,0-6 |
| ITF Women Torun | 2018/06/28 15:10 | Maja Chwalinska v Pirazhenka, Sviatlana | 6-2,6-3 |
| ITF Women Torun Qual | 2018/06/25 12:30 | Pirazhenka, Sviatlana v Lapustina, Irina | 6-0,6-4 |
| ITF Women Torun Qual | 2018/06/25 08:00 | Pirazhenka, Sviatlana v Komar, Natalia | 6-3,6-1 |
| ITF Women Kaltenkirchen | 2018/06/19 11:50 | Anna Klasen v Pirazhenka, Sviatlana | 6-2,6-3 |
| s-Hertogenbosch, Netherlands, Qualifying | 2018/06/10 13:50 | Veronika Kudermetova v Pirazhenka, Sviatlana | 6-2,6-3 |
| s-Hertogenbosch, Netherlands, Qualifying | 2018/06/09 12:45 | Pirazhenka, Sviatlana v Perez, Ellen | 7-6,6-4 |
| ITF Women Corroios-Seixal | 2018/07/01 09:00 | Sara Lanca v Ortega Redondo, Paula | 6-2,6-1 |
| ITF Women Guimaraes | 2018/06/25 10:00 | Sara Lanca v Quattrone, Chiara | 6-3,3-6,3-6 |
| ITF Women Guimaraes | 2018/06/24 09:00 | Sara Lanca v Roth, Michelle | 6-3,6-2 |
| ITF Women Amarante | 2018/06/17 09:00 | Sara Lanca v Martinez Moral, Uxia | 4-6,3-6 |
| Obidos, Singles W-WITF-POR-12A | 2018/06/13 15:25 | Zakarlyuk, Marianna v Sara Lanca | 6-4,6-4 |
| ITF Women Obidos Qual | 2018/06/04 11:10 | Sara Lanca v Delgado, Luniuska | 0-6,2-6 |
| ITF Women Obidos Qual | 2018/05/27 09:30 | Sara Lanca v Bertschmann, Stephanie | 3-6,1-6 |
| ITF Women Oeiras | 2018/05/20 12:00 | Sara Lanca v Baptista, Joana | 6-0,0-6,3-6 |