| ITF Women Nanao | 2018/08/29 03:30 | Rina Saigo v Ayano Shimizu | 2-6,3-6 |
| Tsukuba, Singles W-WITF-JPN-09A | 2018/08/20 01:00 | Rina Saigo v So, Kumi | 3-6,1-6 |
| Tsukuba, Singles W-WITF-JPN-09A | 2018/08/19 03:00 | Hsu, Ching Wen v Rina Saigo | 6-3,0-6,5-7 |
| Karuizawa, Singles W-WITF-JPN-10A | 2018/05/23 01:00 | Rina Saigo v Myers, Abbie | 6-7,3-6 |
| ITF Women Karuizawa Qual | 2018/05/21 01:00 | Kawasaki, Mitsumi v Rina Saigo | 1-6,2-6 |
| ITF Women Karuizawa Qual | 2018/05/20 02:30 | Rina Saigo v Kitagawa, Rio | 6-2,6-3 |
| ITF Women Karuizawa Qual | 2017/05/21 01:00 | Rina Saigo v Baba, Sari | 4-6,2-6 |
| ITF Women Kyoto | 2016/09/04 01:00 | Kamiyoshihara, Ai v Rina Saigo | 6-7,7-5,6-3 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/06/09 02:00 | Sano, Yuika v Nishizato, Kiko | 4-6,3-6 |
| ITF Women Karuizawa Qual | 2018/05/20 01:00 | Sano, Yuika v Yui Chikaraishi | 1-6,6-7 |
| ITF Women Gifu Qual | 2018/04/29 02:30 | Kyoka Okamura v Sano, Yuika | 6-0,6-0 |
| ITF Women Toyota Qual | 2018/03/11 03:30 | Sano, Yuika v Chihiro Muramatsu | 2-6,3-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Shimizu, Chinatsu v Sano, Yuika | 2-6,4-6 |
| ITF Women Hamamatsu Qual | 2017/10/14 00:00 | Mayuka Aikawa v Sano, Yuika | 6-2,6-1 |
| ITF Women Nanao Qual | 2017/08/27 01:00 | Sano, Yuika v Ando, Yuki | 0-6,0-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2017/06/11 00:00 | Lee, Pei-Chei v Sano, Yuika | 6-3,6-0 |