Stadium: Court 1 Round: 64 Ground: Grass
| WTA Hertogenbosch Qual | 2018/06/09 09:20 | Valentini Grammatikopoulou v Dewi Dijkman | 6-3,6-1 |
| French Open Women Qual | 2018/05/24 09:30 | Anna Kalinskaya v Valentini Grammatikopoulou | 3-6,6-1,6-2 |
| French Open Women Qual | 2018/05/22 13:55 | Valentini Grammatikopoulou v Sofya Zhuk | 6-1,1-6,7-6 |
| ITF Women Saint Gaudens | 2018/05/18 12:00 | Quirine Lemoine v Valentini Grammatikopoulou | 6-2,6-4 |
| ITF Women Saint Gaudens | 2018/05/17 15:00 | Valentini Grammatikopoulou v Richel Hogenkamp | 7-6,6-1 |
| ITF Women Saint Gaudens | 2018/05/16 08:00 | Valentini Grammatikopoulou v Kimberly Birrell | 4-6,7-5,6-2 |
| ITF Women Khimki | 2018/05/02 10:30 | Valentini Grammatikopoulou v Julia Glushko | 4-6,6-7 |
| ITF Women Khimki | 2018/05/01 09:45 | Valentini Grammatikopoulou v Angelina Gabueva | 6-7,7-6,6-4 |
| WTA Hertogenbosch Qual | 2018/06/09 09:50 | Katarzyna Piter v Barbara Haas | 6-3,6-4 |
| ITF Women Brescia | 2018/06/06 09:30 | Francesca Di Lorenzo v Katarzyna Piter | 7-5,6-1 |
| ITF Women Brescia Qual | 2018/06/05 08:30 | Katarzyna Piter v Carolina Alves | 6-3,6-1 |
| ITF Women Brescia Qual | 2018/06/04 10:20 | Katarzyna Piter v Gabriela Ce | 6-1,6-1 |
| ITF Women Brescia Qual | 2018/06/03 12:25 | Katarzyna Piter v Michele Alexandra Zmau | 6-1,6-4 |
| ITF Women Grado Qual | 2018/05/26 13:00 | Katarzyna Piter v Maria Camila Osorio | 4-6,2-6 |
| WTA Strasbourg | 2018/05/20 13:40 | Zarina Diyas v Katarzyna Piter | 6-2,6-4 |
| WTA Strasbourg Qual | 2018/05/19 11:00 | Katarzyna Piter v Jaqueline Adina Cristian | 6-3,6-2 |