Round: 28 Ground: Hardcourt outdoor
| UTR Pro Kawaguchi Women | 2025/07/21 01:00 | Mua Shigeta v Shiho Tsujioka | 6-7,4-6 |
| ITF W15 Sapporo | 2025/06/26 01:00 | Onyu Choi v Shiho Tsujioka | 4-6,6-4,6-4 |
| ITF W15 Sapporo | 2025/06/24 02:30 | Shiho Tsujioka v Nana Kawagishi | 4-6,6-2,6-2 |
| ITF W15 Sapporo | 2025/06/19 01:00 | Shiho Tsujioka v Ayumi Miyamoto | 3-6,2-6 |
| ITF W15 Sapporo | 2025/06/17 01:00 | Shiho Tsujioka v Sera Nishimoto | 6-4,6-2 |
| ITF W15 Osaka | 2025/06/05 01:00 | Stefani Webb v Shiho Tsujioka | 6-2,5-0 |
| ITF W15 Osaka | 2025/06/04 07:43 | Shiho Tsujioka v Eun Ji Lee | 6-3,5-3 |
| ITF W15 Fukui | 2025/05/23 01:00 | Shiho Tsujioka v Honori Koyama | 6-3,6-1 |
| ITF W15 Fukui | 2025/05/22 01:00 | Nao Nishino v Rira Kosaka | 6-1,5-1 |
| ITF W15 Fukui | 2025/05/21 02:30 | Rira Kosaka v Yuno Kitahara | 7-5,0-6,6-2 |
| ITF W15 Toyama | 2025/05/14 01:00 | Yuka Naito v Rira Kosaka | 6-1,2-6,6-2 |
| UTR Pro Yokohama Women | 2025/03/15 02:30 | Rira Kosaka v Mua Shigeta | 6-1,6-2 |
| UTR Pro Yokohama Women | 2025/03/14 01:00 | Rira Kosaka v Aoi Yoshida | 7-5,6-1 |
| UTR Pro Yokohama Women | 2025/03/13 07:00 | Rira Kosaka v Alice Pesci | 7-5,2-6,6-1 |
| UTR Pro Yokohama Women | 2025/03/13 01:00 | Rira Kosaka v Miho Ono | 6-1,6-1 |
| UTR Pro Yokohama Women | 2025/03/11 02:25 | Naomi Hagi v Rira Kosaka | 1-6,0-6 |