Stadium: Court 4 Round: 25 Ground: Synthetic outdoor
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/11 02:55 | Momoko Kobori v Mei Yamaguchi | 6-1,6-3 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/09 00:30 | Inoue, Akari v Mei Yamaguchi | 0-6,1-6 |
| ITF Women Nonthaburi Qual | 2018/07/15 02:00 | Kaylah McPhee v Mei Yamaguchi | 6-2,6-3 |
| ITF Women Nonthaburi Qual | 2018/07/14 02:00 | Tumthong, Dolavee v Mei Yamaguchi | 3-6,2-6 |
| ITF Women Nonthaburi Qual | 2018/07/08 03:10 | Mei Yamaguchi v Gabriella Da Silva Fick | 6-7,1-6 |
| ITF Women Nonthaburi Qual | 2018/07/07 04:00 | Mei Yamaguchi v Natarajan, Ramya | 4-6,6-1,6-1 |
| Kofu, Singles W-WITF-JPN-02A | 2018/06/13 02:40 | Doi, Misaki v Mei Yamaguchi | 6-3,6-3 |
| Karuizawa, Singles W-WITF-JPN-10A | 2018/05/25 03:35 | Mei Yamaguchi v Myers, Abbie | 4-6,4-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/11 02:15 | Hiromi Abe v Lee, Hua-Chen | 6-2,6-0 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/10 02:10 | Lee, Hua-Chen v Kanako Morisaki | 6-1,7-6 |
| ITF Women Anning | 2018/09/29 02:15 | Sun, Xu Liu v Lee, Hua-Chen | 0-6,1-6 |
| ITF Women Anning | 2018/09/28 02:00 | Zhuoma Ni Ma v Lee, Hua-Chen | 4-6,0-6 |
| ITF Women Anning | 2018/09/27 02:00 | Yang, Ziyi v Lee, Hua-Chen | 3-6,1-6 |
| ITF Women Anning | 2018/09/26 02:00 | Mu, Shou Na v Lee, Hua-Chen | 3-6,0-6 |
| ITF Women Anning | 2018/09/25 03:55 | Liu, SI Qi v Lee, Hua-Chen | 2-6,3-6 |
| ITF Women Anning | 2018/09/22 03:00 | Lee, Hua-Chen v Yang, Ziyi | 6-2,6-2 |