Stadium: Court 6 Round: 45 Ground: Hardcourt outdoor
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2019/03/18 00:30 | Ya-Hsuan Lee v Catherine Harrison | 6-3,4-6,14-12 |
| ITF W60 Kyoto | 2019/02/20 02:00 | Ya-Hsuan Lee v Akiko Omae | 6-7,6-7 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/21 03:00 | Ya-Hsuan Lee v Eudice Chong | 0-6,5-7 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/16 03:45 | Nara, Kurumi v Ya-Hsuan Lee | 7-5,6-4 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/15 02:00 | Ya-Hsuan Lee v Peangtarn Plipuech | 6-2,6-1 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/14 03:00 | Ya-Hsuan Lee v Veselinovic, Ana | 6-3,6-3 |
| ITF Women Pune | 2018/11/27 04:30 | Tamara Zidansek v Ya-Hsuan Lee | 6-3,6-3 |
| Taipei, Taipei Chinois | 2018/11/12 03:45 | Ya-Hsuan Lee v Tereza Martincova | 3-6,0-6 |
| 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 |
| ITF W25 Altenkirchen | 2019/02/21 16:00 | Stephanie Wagner v Zanevska, Maryna | 0-6,4-6 |
| ITF W25 Altenkirchen | 2019/02/20 12:00 | Pantuckova, Magdalena v Stephanie Wagner | 1-6,7-6,0-6 |
| ITF W25 Altenkirchen | 2019/02/18 18:45 | Gerlach, Katharina v Stephanie Wagner | 6-3,3-6,5-10 |