| ITF Women Guimaraes | 2018/06/25 10:00 | Katriin Saar v Olga Helmi | 1-6,7-6,6-1 |
| ITF Women Guimaraes | 2018/06/24 09:00 | Almudena S-L Fernandez v Olga Helmi | 6-7,1-6 |
| ITF Women Amarante | 2018/06/21 14:30 | Olga Helmi v Alba Carrillo Marin | 4-6,2-6 |
| ITF Women Amarante | 2018/06/20 09:00 | Maria Joao Koehler v Olga Helmi | 3-6,2-6 |
| ITF Women Amarante | 2018/06/18 09:00 | Olga Helmi v Jane Stewart | 6-1,6-1 |
| ITF Women Amarante | 2018/06/17 09:00 | Olga Helmi v Iman Garshong | 6-0,6-1 |
| ITF Women Hammamet | 2018/05/23 09:00 | Miriana Tona v Olga Helmi | 6-1,6-0 |
| ITF Women Karlskrona | 2018/05/10 09:50 | Lisa Matviyenko v Olga Helmi | 6-1,6-1 |
| ITF Women Oeiras | 2018/05/20 09:30 | Alicia Herrero Linana v Sashi Kempster | 6-0,6-1 |