Stadium: Centre Court Round: 25
| ITF Women Shrewsbury | 2017/11/07 10:00 | Katarzyna Piter v Marina Melnikova | 3-6,6-2,3-6 |
| WTA Hertogenbosch Qual | 2018/06/10 09:00 | Valentini Grammatikopoulou v Katarzyna Piter | 6-4,6-4 |
| 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 - Hertogenbosch | 2018/06/12 09:00 | Marina Melnikova v Viktoria Hruncakova | 2-6,2-6 |
| WTA Hertogenbosch Qual | 2018/06/10 11:55 | Tereza Martincova v Marina Melnikova | 6-7,2-6 |
| WTA Hertogenbosch Qual | 2018/06/09 12:45 | Lidziya Marozava v Marina Melnikova | 3-6,6-2,6-7 |
| ITF Women Surbiton | 2018/06/05 10:00 | Marina Melnikova v Madison Brengle | 6-3,2-6,3-6 |
| ITF Women Surbiton Qual | 2018/06/04 10:00 | Jaimee Fourlis v Marina Melnikova | 5-7,1-6 |
| ITF Women Surbiton Qual | 2018/06/03 15:45 | Emily Appleton v Marina Melnikova | 6-2,4-6,0-6 |
| ITF Women Surbiton Qual | 2018/06/02 18:40 | Sarah Beth Grey v Marina Melnikova | 2-6,2-6 |
| ITF Women Grado | 2018/05/30 09:00 | Renata Zarazua v Marina Melnikova | 6-3,7-5 |