Stadium: Campo 3 Round: 45 Ground: Clay
| WTA Monterrey Qual | 2018/04/01 18:00 | Sizikova, Yana v Conny Perrin | 5-7,0-6 |
| WTA Monterrey Qual | 2018/03/31 16:00 | Ashley Kratzer v Sizikova, Yana | 6-3,1-6,3-6 |
| Gwalior, Singles W-WITF-IND-02A | 2018/03/15 04:00 | Sizikova, Yana v Karman Kaur Thandi | 7-5,6-3 |
| Gwalior, Singles W-WITF-IND-02A | 2018/03/14 03:30 | Ivakhnenko, Valentyna v Sizikova, Yana | 6-7,3-6 |
| Gwalior, Singles W-WITF-IND-02A | 2018/03/13 05:55 | Sizikova, Yana v Luangnam, Nudnida | 6-4,6-3 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/03/09 07:30 | Basak Eraydin v Sizikova, Yana | 6-4,7-5 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/03/08 09:05 | Daniilidou, Eleni v Sizikova, Yana | 6-4,5-7,2-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/03/07 07:30 | Velcea , Andreea v Sizikova, Yana | 3-6,3-6 |
| Santa Margherita Di Pula, Simples W-WITF-ITA-27A | 2018/03/22 15:35 | Julia Grabher v Tena Lukas | 6-7,4-6 |
| ITF Women Sao Paulo | 2018/03/04 14:00 | Tamara Zidansek v Julia Grabher | 4-6,6-3,2-6 |
| ITF Women Sao Paulo | 2018/03/03 14:00 | Julia Grabher v Haas, Barbara | 6-2,6-7,6-3 |
| ITF Women Sao Paulo | 2018/03/02 18:00 | Julia Grabher v Soler-Espinosa, Silvia | 6-3,6-2 |
| ITF Women Sao Paulo | 2018/03/01 14:00 | Julia Grabher v Harmony Tan | 6-3,6-1 |
| Sao Paulo, Singles Qualifying W-WITF-BRA-02A | 2018/02/27 13:00 | Julia Grabher v Brito, Fernanda | 6-4,6-3 |
| Curitiba, Singles W-WITF-BRA-01A | 2018/02/24 15:45 | Julia Grabher v Tamara Zidansek | 7-5,6-7,4-6 |
| Curitiba, Singles W-WITF-BRA-01A | 2018/02/23 17:45 | Julia Grabher v Sara Cakarevic | 6-3,6-3 |