Stadium: Court 1 Round: 26 Ground: Clay
| 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 |
| ITF Women LPD Gran Canaria | 2018/08/08 11:30 | Yana Sizikova v Andrea Gamiz | 2-6,6-4,7-5 |
| ITF Women LPD Gran Canaria | 2018/08/06 09:00 | Carlota Molina Megias v Yana Sizikova | 4-6,5-7 |
| WTA Moscow Qual | 2018/07/23 10:30 | Yana Sizikova v Martina Trevisan | 6-3,2-6,2-6 |
| WTA Moscow Qual | 2018/07/23 07:00 | Rika Fujiwara v Yana Sizikova | 1-6,4-6 |
| WTA Gstaad Qual | 2018/07/14 09:10 | Conny Perrin v Yana Sizikova | 6-4,6-4 |
| ITF Women Getxo | 2018/07/10 08:00 | Yana Sizikova v Olga Saez Larra | 4-6,1-6 |
| ITF Women Moscow | 2018/08/15 15:20 | Valeriya Yushchenko v Daria Mishina | 6-4,4-6,2-6 |
| ITF Women Moscow | 2018/08/14 16:35 | Kristina Kudryavtseva v Valeriya Yushchenko | 2-6,2-6 |
| ITF Women Kazan | 2018/08/04 07:00 | Valeriya Yushchenko v Daria Mishina | 3-6,1-6 |
| ITF Women Kazan | 2018/08/03 08:25 | Valeriya Yushchenko v Maria Timofeeva | 6-2,6-3 |
| ITF Women Kazan | 2018/08/02 08:55 | Alena Fomina v Valeriya Yushchenko | 6-1,2-6,5-7 |
| ITF Women Kazan | 2018/08/01 10:55 | Nonna Kurginyan v Valeriya Yushchenko | 1-6,2-6 |
| ITF Women Kazan | 2018/07/30 07:00 | Gyulnara Nazarova v Valeriya Yushchenko | 2-6,4-6 |
| ITF Women Astana Qual | 2018/07/14 11:00 | Valeriya Yushchenko v Ksenia Laskutova | 6-1,3-6,4-6 |