Stadium: Centre Court Round: 54
| ITF Women Khimki Qual | 2018/04/28 10:10 | Golubovskaya, Polina v Koval, Vlada | 3-6,2-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/03/28 07:30 | Flink, Varvara v Koval, Vlada | 6-2,6-4 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/03/21 08:35 | Koval, Vlada v Caroline Romeo | 7-6,5-7,1-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/03/13 08:55 | Koval, Vlada v Rebecca Sramkova | 7-5,2-6,3-6 |
| Moscow, Singles W-WITF-RUS-05A | 2018/03/02 11:05 | Koval, Vlada v Sofya Lansere | 5-7,4-6 |
| Moscow, Singles W-WITF-RUS-05A | 2018/03/01 10:05 | Marozava, Lidziya v Koval, Vlada | 5-7,6-7 |
| Moscow, Singles W-WITF-RUS-05A | 2018/02/27 09:50 | Koval, Vlada v Nazarova, Gyulnara | 6-4,6-3 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/02/01 09:15 | Dascalu, Nicoleta-Catalina v Koval, Vlada | 6-1,5-7,6-1 |
| ITF Women Khimki Qual | 2018/04/28 11:40 | Bursa, Anastasia v Zeleva, Valeriya | 7-6,0-6,1-6 |
| Karshi, Singles W-WITF-UZB-01A | 2018/04/23 06:30 | Sofya Lansere v Zeleva, Valeriya | 6-1,3-6,6-4 |
| ITF Women Kazan | 2018/03/15 07:00 | Vishnevskaya, Ekaterina v Zeleva, Valeriya | 6-3,6-2 |
| ITF Women Kazan | 2018/03/14 07:00 | Zeleva, Valeriya v Kulik, Aleksandra | 6-3,6-2 |
| ITF Women Kazan | 2018/03/12 10:00 | Zeleva, Valeriya v Krasnova, Daria | 6-4,6-0 |
| Moscow, Singles W-WITF-RUS-05A | 2018/03/01 09:00 | Zeleva, Valeriya v Sofya Lansere | 3-6,6-3,5-7 |
| Moscow, Singles W-WITF-RUS-05A | 2018/02/27 09:20 | Treshcheva, Sofya v Zeleva, Valeriya | 3-6,3-6 |
| ITF Women Stuttgart | 2018/01/23 12:00 | Nina Alibalic v Zeleva, Valeriya | 3-6,6-4,6-1 |