Stadium: Court 6 Round: 25
| WTA Lugano Qual | 2018/04/08 11:50 | Diana Marcinkevica v Alexandra Cadantu | 3-6,2-6 |
| ITF Women Le Havre | 2018/03/24 13:30 | Marine Partaud v Diana Marcinkevica | 6-4,7-5 |
| ITF Women Le Havre | 2018/03/23 11:00 | Angela Fita Boluda v Diana Marcinkevica | 3-6,3-6 |
| ITF Women Le Havre | 2018/03/21 16:40 | Lou Brouleau v Diana Marcinkevica | 6-3,2-6,1-6 |
| ITF Women Le Havre | 2018/03/20 14:15 | Justine Pysson v Diana Marcinkevica | 6-2,1-6,5-7 |
| ITF Women Macon | 2018/02/28 17:00 | Diana Marcinkevica v Daniela Vismane | 5-7,3-6 |
| ITF Women Macon | 2018/02/27 13:20 | Diana Marcinkevica v Arina Gabriela Vasilescu | 7-5,6-3 |
| ITF Women Altenkirchen | 2018/02/21 13:55 | Anna Zaja v Diana Marcinkevica | 6-3,3-6,6-3 |
| ITF Women Indian Harbour | 2018/04/11 14:30 | Olga Ianchuk v Victoria Duval | 4-6,2-6 |
| WTA Monterrey Qual | 2018/03/31 18:10 | Jovana Jaksic v Olga Ianchuk | 6-3,3-6,6-4 |
| WTA Acapulco Qual | 2018/02/25 01:45 | Arantxa Rus v Olga Ianchuk | 6-2,6-1 |
| ITF Women Rancho Santa Fe Qual | 2018/02/22 02:20 | Olga Ianchuk v Paula Cristina Goncalves | 6-1,6-7,4-6 |
| ITF Women Surprise | 2018/02/17 19:30 | Olga Ianchuk v Ana Sofia Sanchez | 4-6,6-7 |
| ITF Women Surprise | 2018/02/17 01:40 | Evgeniya Rodina v Olga Ianchuk | 6-7,6-4,3-6 |
| ITF Women Surprise | 2018/02/16 19:00 | Olga Ianchuk v Usue Maitane Arconada | 6-3,2-6,6-1 |
| ITF Women Surprise | 2018/02/13 22:25 | Danielle Lao v Olga Ianchuk | 6-4,6-7,6-7 |