Stadium: Court 10 Round: 25
| ITF Women Charlottesville | 2018/04/27 17:25 | Mari Osaka v Anhelina Kalinina | 2-6,7-6,5-7 |
| ITF Women Charlottesville | 2018/04/26 21:40 | Madison Brengle v Mari Osaka | 1-6,2-6 |
| ITF Women Charlottesville | 2018/04/26 16:50 | Mari Osaka v Katherine Sebov | 1-6,7-6,6-1 |
| ITF Women Charlottesville Qual | 2018/04/24 14:00 | Mari Osaka v Alexandra Mueller | 6-4,6-2 |
| ITF Women Charlottesville Qual | 2018/04/23 14:00 | Mari Osaka v Ingrid Neel | 6-7,6-1,6-1 |
| ITF Women Pelham | 2018/04/10 23:30 | Mari Osaka v Barbara Haas | 6-4,6-7,0-6 |
| ITF Women Jackson | 2018/04/04 15:00 | Mari Osaka v Gaia Sanesi | 5-7,4-6 |
| ITF Women Wesley Chapel Qual | 2018/01/23 19:40 | Mari Osaka v Olga Ianchuk | 6-7,4-6 |
| ITF Women Luan | 2018/05/08 06:15 | Aleksandrina Naydenova v Yue Yuan | 4-6,5-7 |
| WTA Anning | 2018/04/30 05:30 | Shuai Peng v Aleksandrina Naydenova | 4-6,6-1,6-4 |
| WTA Anning Qual | 2018/04/29 04:30 | Aleksandrina Naydenova v Ao Gai | 6-1,6-3 |
| WTA Anning Qual | 2018/04/28 07:30 | Aleksandrina Naydenova v Shanshan Guo | 7-5,6-4 |
| ITF Women Obidos Qual | 2018/04/17 12:45 | Aleksandrina Naydenova v Romy Koelzer | 0-6,7-6,4-6 |
| ITF Women Obidos Qual | 2018/04/15 14:00 | Aleksandrina Naydenova v Rosa Vicens Mas | 6-2,6-2 |
| ITF Women Obidos | 2018/04/11 14:25 | Sara Lanca v Aleksandrina Naydenova | 7-5,6-1 |
| ITF Women Cherbourg Qual | 2017/10/10 11:10 | Ekaterina Kazionova v Aleksandrina Naydenova | 6-4,6-0 |