Stadium: Court 1 Round: 27 Ground: Hardcourt outdoor
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2019/03/21 02:00 | Cepelova, Jana v Hibi, Mayo | 1-6,5-7 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2019/03/20 05:15 | Hibi, Mayo v Burrage, Jodie Anna | 6-0,4-6,6-2 |
| Nishi-Tama, Simples W-ITF-JPN-04A | 2019/03/14 02:40 | Ayano Shimizu v Hibi, Mayo | 6-2,6-3 |
| Nishi-Tama, Simples W-ITF-JPN-04A | 2019/03/13 05:05 | Hibi, Mayo v Francesca Jones | 6-4,6-0 |
| ITF W25 Yokohama | 2019/03/07 05:10 | Naho Sato v Hibi, Mayo | 6-3,6-4 |
| ITF W25 Yokohama | 2019/03/06 06:15 | Ozaki, Risa v Hibi, Mayo | 6-3,3-6,2-6 |
| WTA - Indian Wells | 2019/02/25 18:00 | Hibi, Mayo v Ena Shibahara | 6-2,3-6,4-6 |
| Rancho Santa Fe, Ca, Singles W-ITF-USA-05A | 2019/02/20 18:00 | Sachia Vickery v Hibi, Mayo | 6-3,6-4 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2019/03/21 02:00 | Taylor, Gabriella v Stephanie Wagner | 3-6,4-6 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2019/03/20 05:55 | Stephanie Wagner v Han, Xinyun | 6-1,6-1 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2019/03/18 04:30 | Ya-Hsuan Lee v Stephanie Wagner | 1-6,0-6 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2019/03/18 00:30 | Stephanie Wagner v Kyoka Okamura | 3-6,6-2,10-2 |
| Nishi-Tama, Simples W-ITF-JPN-04A | 2019/03/14 02:30 | Stephanie Wagner v Gatto-Monticone, Giulia | 3-6,7-5,3-6 |
| Nishi-Tama, Simples W-ITF-JPN-04A | 2019/03/13 01:00 | Stephanie Wagner v Tere-Apisah, Abigail | 6-2,6-4 |
| Nishi-Tama, Simples W-ITF-JPN-04A | 2019/03/12 01:00 | Stephanie Wagner v Chang, Kai-Chen | 6-2,1-6,10-6 |
| Nishi-Tama, Simples W-ITF-JPN-04A | 2019/03/11 03:00 | Rutuja Bhosale v Stephanie Wagner | 5-7,6-1,8-10 |