Stadium: Court B 2 Round: 25 Ground: Clay
| ITF Women Wesley Chapel Qual | 2018/01/23 19:40 | Mari Osaka v Olga Ianchuk | 6-7,4-6 |
| ITF Women Orlando Qual | 2018/01/14 15:00 | Mari Osaka v Caitlin Whoriskey | 3-6,6-7 |
| ITF Women Daytona Beach | 2018/01/12 15:00 | Mari Osaka v Grace Min | 6-7,4-6 |
| ITF Women Daytona Beach | 2018/01/11 16:30 | Elena-Gabriela Ruse v Mari Osaka | 6-7,3-6 |
| ITF Women Daytona Beach | 2018/01/11 01:05 | Mari Osaka v Kyoka Okamura | 6-1,6-1 |
| WTA Honolulu Qual | 2017/11/19 22:45 | Mari Osaka v Haruka Kaji | 3-6,5-7 |
| WTA Limoges Qual | 2017/11/05 12:00 | Mari Osaka v Olga Saez Larra | 6-1,3-6,6-7 |
| WTA Limoges Qual | 2017/11/04 13:35 | Silvia Soler-Espinosa v Mari Osaka | 3-6,7-6,4-6 |
| ITF Women Sharm El Sheikh | 2018/03/14 10:30 | Jodie Anna Burrage v Gaia Sanesi | View |
| ITF Women Sharm El Sheikh | 2018/03/09 11:30 | Gaia Sanesi v An-Sophie Mestach | 6-2,4-6,4-6 |
| ITF Women Sharm El Sheikh | 2018/03/07 11:30 | Gaia Sanesi v Laura Maluniakova | 6-1,4-6,6-2 |
| ITF Women Sharm El Sheikh | 2018/02/28 11:35 | Gaia Sanesi v Iga Swiatek | 3-6,5-7 |
| ITF Women Antalya | 2018/02/18 11:00 | Rebecca Marino v Gaia Sanesi | 6-2,6-1 |
| ITF Women Antalya | 2018/02/17 10:30 | Amina Anshba v Gaia Sanesi | 3-6,2-6 |
| ITF Women Antalya | 2018/02/16 10:30 | Gaia Sanesi v Martina Caregaro | 4-6,7-5,6-4 |
| ITF Women Antalya | 2018/02/15 09:35 | Gaia Sanesi v Eliessa Vanlangendonck | 6-3,6-4 |