Stadium: Court 2 Round: 25 Ground: Clay
| ITF Women Moscow | 2018/08/22 11:30 | Yana Sizikova v Valeriya Yushchenko | 4-6,1-6 |
| ITF Women Minsk | 2018/11/05 09:40 | Katyarina Paulenka v Valeriya Yushchenko | 1-6,1-6 |
| ITF Women Minsk | 2018/11/04 14:25 | Alise Cernecka v Valeriya Yushchenko | 3-6,5-7 |
| ITF Women Istanbul | 2018/10/21 10:00 | Ekaterina Kazionova v Valeriya Yushchenko | 3-6,2-6 |
| ITF Women Istanbul | 2018/10/20 08:00 | Gebriela Mihaylova v Valeriya Yushchenko | 4-6,1-6 |
| ITF Women Antalya | 2018/09/25 09:20 | Valeriya Yushchenko v Bianca Behulova | 6-4,6-1 |
| ITF Women Dobrich | 2018/09/19 12:25 | Amina Anshba v Valeriya Yushchenko | 6-4,6-4 |
| ITF Women Dobrich | 2018/09/17 06:30 | Melanie Klaffner v Valeriya Yushchenko | 5-7,2-6 |
| ITF Women Moscow | 2018/08/25 07:00 | Valeriya Yushchenko v Ekaterina Makarova | 6-0,6-0 |
| WTA Mumbai | 2018/10/27 06:50 | Mahak Jain v Yana Sizikova | 3-6,6-3,7-5 |
| WTA Tianjin | 2018/10/06 06:40 | Yana Sizikova v Michaela Honcova | 6-4,6-2 |
| ITF Women Almaty | 2018/08/30 05:00 | Yuliya Hatouka v Yana Sizikova | 7-5,6-1 |
| ITF Women Almaty | 2018/08/29 06:35 | Daria Lodikova v Yana Sizikova | 1-6,6-7 |
| ITF Women Almaty | 2018/08/28 10:15 | Tereza Mihalikova v Yana Sizikova | 3-6,5-7 |
| ITF Women Moscow | 2018/08/22 11:30 | Yana Sizikova v Valeriya Yushchenko | 4-6,1-6 |
| ITF Women Moscow | 2018/08/20 07:00 | Yana Sizikova v Vitalia Stamat | 6-0,6-2 |
| ITF Women LPD Gran Canaria | 2018/08/09 10:00 | Irene Burillo Escorihuela v Yana Sizikova | 6-1,3-6,7-6 |