| ITF W25 Makinohara | 10/13 01:00 | 28 | Nagi Hanatani v Risa Ushijima | 6-0,6-2 | |
| ITF W25 Makinohara | 10/11 00:30 | 27 | Risa Ushijima v Sakura Hondo | 7-6,6-1 | |
| ITF W25 Makinohara | 10/10 03:40 | 26 | [451] Risa Ushijima v Kanako Morisaki [255] | 7-6,7-6 | |
| ITF W25 Makinohara | 10/09 05:10 | 25 | Risa Ushijima v Himeno Sakatsume | 6-4,6-0 | |
| ITF W25 Cairns | 09/19 01:30 | 26 | [458] Risa Ushijima v Zuzana Zlochova [331] | 3-6,4-6 | |
| ITF W25 Cairns | 09/18 00:00 | 25 | Risa Ushijima v Amber Marshall | 7-6,6-4 | |
| ITF W25 Kyoto | 09/06 03:50 | 27 | Ayumi Morita v Risa Ushijima | 6-1,6-3 | |
| ITF W25 Kyoto | 09/05 02:50 | 26 | [450] Risa Ushijima v Kanako Morisaki [261] | 6-1,6-7,6-4 | |
| ITF W25 Kyoto | 09/04 04:30 | 25 | Himari Sato v Risa Ushijima | 1-6,6-2,1-6 | |
| ITF W25 Nanao | 08/27 01:00 | 25 | Risa Ushijima v Nagi Hanatani | 5-7,3-6 | |
| ITF W25 Tsukuba | 08/21 02:20 | 25 | Risa Ushijima v Nagi Hanatani | 1-6,6-7 | |
| ITF W25 Taipei | 08/04 02:00 | 29 | [202] Valeria Savinykh v Risa Ushijima [498] | 7-5,6-2 | |
| ITF W25 Taipei | 08/03 02:00 | 28 | [498] Risa Ushijima v Ying Zhang [363] | 6-3,6-2 | |
| ITF W25 Taipei | 08/02 02:00 | 27 | [436] Mai Minokoshi v Risa Ushijima [498] | 6-2,6-7,6-7 | |
| ITF W25 Taipei | 08/01 04:40 | 26 | Risa Ushijima v Ya Hsin Lee | 4-6,7-6,6-2 | |
| ITF W25 Taipei | 07/31 04:25 | 25 | Risa Ushijima v Man Ying Maggie Ng | 6-3,6-2 | |
| ITF W25 Qujing | 07/16 05:50 | 25 | Risa Ushijima v Yexin Ma | 3-6,6-3,4-6 | |
| ITF W25 Ulanqab | 07/10 03:00 | 25 | [477] Risa Ushijima v Jia-Jing Lu [215] | 2-6,2-6 | |
| ITF W25 Tianjin | 07/02 03:30 | 54 | Risa Ushijima v Meiqi Guo | 6-2,4-6,6-10 | |
| ITF W25 Tianjin | 07/01 02:00 | 54 | Risa Ushijima v Wei Zheng | 6-4,6-4 | |
| ITF W25 Naiman | 06/26 04:20 | 25 | [497] Risa Ushijima v Miharu Imanishi [295] | 6-7,5-7 | |
| ITF W25 Jakarta | 06/21 02:00 | 27 | [279] Hiroko Kuwata v Risa Ushijima [495] | 6-3,4-6,7-6 | |
| ITF W25 Jakarta | 06/20 04:50 | 26 | [495] Risa Ushijima v Abigail Tere-Apisah [286] | 7-5,2-6,6-1 | |
| ITF W25 Jakarta | 06/19 02:00 | 25 | Chompoothip Jundakate v Risa Ushijima | 3-6,3-6 | |
| ITF W25 Luzhou | 05/31 03:40 | 27 | Fang Ying Xun v Risa Ushijima | 6-1,6-2 | |
| ITF W25 Luzhou | 05/30 02:30 | 26 | Jiahui Chen v Risa Ushijima | 5-7,1-6 | |
| ITF W25 Luzhou | 05/28 05:30 | 25 | Risa Ushijima v Meiling Wang | 6-4,6-3 | |
| ITF W25 Karuizawa | 05/21 07:35 | 25 | Emina Bektas v Risa Ushijima | 7-5,6-1 | |
| ITF W60 Kurume | 05/13 00:30 | 45 | Risa Ushijima v Himeno Sakatsume | 1-6,2-6 | |
| ITF W60 Fukuoka | 05/06 05:00 | 45 | Mai Hontama v Risa Ushijima | 6-3,6-3 |