 Japan: W50 Kofu - Singles - Main |
|---|
| Final | Sakatsume H. | Kaji H. | 0:2 (62:7, 3:6) | details | 23.03.2025 |
| Semi-finals | Kaji H. | Saito S. | 2:1 (5:7, 6:2, 6:3) | details | 22.03.2025 |
| Quarter-finals | Kaji H. | Kuramochi M. | 2:0 (6:2, 6:1) | details | 21.03.2025 |
| 1/8-finals | Kaji H. | Giavara H. | 2:0 (6:2, 6:2) | details | 20.03.2025 |
| 1/16-finals | Kaji H. | Yoshimoto N. | 2:0 (6:4, 6:2) | details | 18.03.2025 |
| Japan: W50 Kyoto - Singles - Main |
|---|
| 1/16-finals | Park S. | Kaji H. | 2:0 (6:1, 6:2) | details | 12.03.2025 |
 India: W35 Gurugram - Singles - Main |
|---|
| Quarter-finals | Kaji H. | Yamazaki I. | 1:2 (4:6, 7:5, 5:7) | details | 07.03.2025 |
| 1/8-finals | Kaji H. | Park S. | 2:0 (7:5, 6:1) | details | 06.03.2025 |
| 1/16-finals | Kaji H. | Rawat A. | 2:0 (6:2, 6:0) | details | 04.03.2025 |
| India: W50 Ahmedabad - Singles - Main |
|---|
| Quarter-finals | Kaji H. | Chaudhari V. | 0:2 (1:6, 65:7) | details | 28.02.2025 |
| 1/8-finals | Kaji H. | Bhamidipaty S. R. | 2:0 (7:65, 6:4) | details | 27.02.2025 |
| 1/16-finals | Kaji H. | Adkar V. | 2:0 (6:0, 6:2) | details | 26.02.2025 |
 Australia: W35 Burnie - Singles - Main |
|---|
| 1/16-finals | Guo H. | Kaji H. | 2:0 (6:1, 6:2) | details | 19.02.2025 |
| Australia: W75 Brisbane 2 - Singles - Main |
|---|
| 1/16-finals | Kaji H. | Inglis M. | 0:2 (5:7, 3:6) | details | 05.02.2025 |
| Australia: W75 Brisbane - Singles - Main |
|---|
| 1/16-finals | Kaji H. | Liu C. | 0:2 (4:6, 0:6) | details | 29.01.2025 |
| Australia: Hobart - Singles - Qualification |
|---|
| Semi-finals | Zarazua R. | Kaji H. | 2:0 (6:1, 7:65) | details | 04.01.2025 |
 New Zealand: Auckland - Singles - Qualification |
|---|
| Semi-finals | Stefanini L. | Kaji H. | 2:0 (6:1, 6:3) | details | 27.12.2024 |
| Japan: W50 Yokohama - Singles - Main |
|---|
| Semi-finals | Inoue H. | Kaji H. | 2:0 (7:65, 6:1) | details | 30.11.2024 |
| Quarter-finals | Kawaguchi N. | Kaji H. | 0:2 (1:6, 2:6) | details | 29.11.2024 |
| 1/8-finals | Akita S. | Kaji H. | 0:2 (2:6, 3:6) | details | 28.11.2024 |
| 1/16-finals | Sato N. | Kaji H. | 0:2 (2:6, 4:6) | details | 27.11.2024 |
| Japan: W100 Takasaki - Singles - Main |
|---|
| Quarter-finals | Nugroho P. M. | Kaji H. | 2:0 (6:2, 7:65) | details | 22.11.2024 |
| 1/8-finals | Kaji H. | Kobori M. | 2:0 (6:4, 6:1) | details | 22.11.2024 |
| 1/16-finals | Jang S. J. | Kaji H. | 0:2 (3:6, 3:6) | details | 21.11.2024 |
 USA: W50 Austin, TX - Singles - Main |
|---|
| Semi-finals | Kaji H. | Rapolu M. | 1:2 (6:2, 4:6, 0:6) | details | 16.11.2024 |
| Quarter-finals | Kaji H. | Chang S. | 2:0 (6:1, 6:1) | details | 15.11.2024 |
| 1/8-finals | Kaji H. | Gimbrere J. | 2:1 (5:7, 7:5, 6:3) | details | 14.11.2024 |
| 1/16-finals | Makarova E. | Kaji H. | 1:2 (6:2, 1:6, 5:7) | details | 13.11.2024 |
| USA: Midland - Singles - Main |
|---|
| 1/8-finals | Lepchenko V. | Kaji H. | 2:1 (65:7, 6:4, 6:4) | details | 07.11.2024 |
| 1/16-finals | Appleton E. | Kaji H. | 0:2 (1:6, 4:6) | details | 05.11.2024 |
| USA: Midland - Singles - Qualification |
|---|
| Final | Kung L. | Kaji H. | 0:2 (2:6, 2:6) | details | 04.11.2024 |
| Semi-finals | Moore T. | Kaji H. | 0:2 (0:6, 2:6) | details | 03.11.2024 |
 Canada: W75+ H Toronto - Singles - Main |
|---|
| Quarter-finals | Kaji H. | Hruncakova V. | 0:2 (4:6, 3:6) | details | 01.11.2024 |
| 1/8-finals | Anderson R. | Kaji H. | 1:2 (7:68, 4:6, 2:6) | details | 31.10.2024 |
| 1/16-finals | Ma L. | Kaji H. | 0:2 (5:7, 1:6) | details | 29.10.2024 |
| Japan: Tokyo - Singles - Qualification |
|---|
| Semi-finals | Yamaguchi M. | Kaji H. | 2:0 (6:3, 6:3) | details | 19.10.2024 |
| Australia: W35 Cairns - Singles - Main |
|---|
| 1/16-finals | Kaji H. | Parnaby A. | 0:2 (3:6, 2:6) | details | 02.10.2024 |
| Japan: W50 Nanao - Singles - Main |
|---|
| Quarter-finals | Okuwaki R. | Kaji H. | 2:0 (7:5, 6:4) | details | 27.09.2024 |
| 1/8-finals | Aney J. | Kaji H. | 1:2 (6:4, 4:6, 2:6) | details | 26.09.2024 |
| 1/16-finals | Saegusa N. | Kaji H. | 0:2 (4:6, 1:6) | details | 24.09.2024 |
 South Korea: Seoul - Singles - Qualification |
|---|
| Semi-finals | Ku Y. | Kaji H. | 2:1 (0:6, 6:3, 6:2) | details | 14.09.2024 |
| South Korea: W100 Incheon - Singles - Main |
|---|
| 1/8-finals | Kaji H. | Gao X. | 0:2 (1:6, 4:6) | details | 05.09.2024 |
| 1/16-finals | Zhao C. | Kaji H. | 0:2 (3:6, 4:6) | details | 03.09.2024 |
 Spain: W35 Vigo - Singles - Main |
|---|
| 1/16-finals | Andrianjafitrimo T. | Kaji H. | 2:0 (6:3, 6:2) | details | 21.08.2024 |
| Spain: W50 Ourense - Singles - Main |
|---|
| Final | Charaeva A. | Kaji H. | 2:0 (7:67, 6:1) | details | 18.08.2024 |
| Semi-finals | Kaji H. | Helgo M. | 2:0 (6:1, 6:1) | details | 17.08.2024 |
| Quarter-finals | Kubka M. | Kaji H. | 0:2 (1:6, 1:6) | details | 16.08.2024 |
| 1/8-finals | Matsuda M. | Kaji H. | 0:2 (3:6, 0:6) | details | 15.08.2024 |
