Stadium: Campo 2 Round: 25 Ground: Clay
| WTA Bogota Qual | 2018/04/08 17:15 | Valentini Grammatikopoulou v Irina Khromacheva | 7-6,7-6 |
| WTA Bogota Qual | 2018/04/07 17:15 | Valentini Grammatikopoulou v Tereza Mrdeza | 4-6,6-4,6-3 |
| WTA Monterrey | 2018/04/03 16:00 | Valentini Grammatikopoulou v Jana Fett | 0-6,2-6 |
| WTA Monterrey Qual | 2018/04/02 16:00 | Valentini Grammatikopoulou v Conny Perrin | 6-2,6-2 |
| WTA Monterrey Qual | 2018/04/01 18:00 | Priscilla Hon v Valentini Grammatikopoulou | 6-7,3-6 |
| WTA Monterrey Qual | 2018/03/31 16:00 | Tereza Mrdeza v Valentini Grammatikopoulou | 3-6,6-2,2-6 |
| ITF Women Shenzhen Qual | 2018/03/11 04:05 | Valentini Grammatikopoulou v Ivana Jorovic | 3-6,1-6 |
| ITF Women Shenzhen Qual | 2018/03/10 03:10 | Valentini Grammatikopoulou v Ling Zhang | 6-3,6-3 |
| WTA Monterrey Qual | 2018/04/01 19:35 | Miyu Kato v Sabrina Santamaria | 6-1,3-6,3-6 |
| WTA Monterrey Qual | 2018/03/31 20:25 | Miyu Kato v Andrea R Villarreal | 6-2,6-3 |
| ITF Women Canberra | 2018/03/24 01:25 | Destanee Aiava v Miyu Kato | 6-3,6-3 |
| ITF Women Canberra | 2018/03/23 00:00 | Ellen Perez v Miyu Kato | 0-6,1-6 |
| ITF Women Canberra | 2018/03/21 23:00 | Irina Fetecau v Miyu Kato | 0-6,3-6 |
| ITF Women Canberra | 2018/03/20 00:40 | Zoe Hives v Miyu Kato | 6-2,6-7,3-6 |
| ITF Women Shenzhen | 2018/03/13 02:00 | Alexandra Cadantu v Miyu Kato | 6-7,7-6,6-4 |
| ITF Women Zhuhai | 2018/03/07 02:00 | Miyu Kato v Anna Blinkova | 2-6,2-6 |