 Kazakhstan: M15 Shymkent 2 - Singles - Main |
|---|
| 1/8-finals | Nishiwaki K. | Polukhin S. | 0:2 (2:6, 0:6) | details | 25.04.2024 |
| 1/16-finals | Nishiwaki K. | Inui Y. | 2:0 (7:63, 6:3) | details | 24.04.2024 |
| Kazakhstan: M15 Shymkent - Singles - Main |
|---|
| 1/16-finals | Nishiwaki K. | Javia D. | 1:2 (6:3, 63:7, 4:6) | details | 17.04.2024 |
 Japan: M15 Kashiwa - Singles - Main |
|---|
| 1/8-finals | Nishiwaki K. | Taguchi R. | 0:2 (3:6, 4:6) | details | 04.04.2024 |
| 1/16-finals | Matsui T. | Nishiwaki K. | 1:2 (7:65, 4:6, 4:6) | details | 02.04.2024 |
| Japan: M15 Tsukuba - Singles - Main |
|---|
| 1/16-finals | Zhou Y. | Nishiwaki K. | 2:1 (4:6, 6:4, 6:3) | details | 27.03.2024 |
| Japan: M15 Nishi-Tokyo - Singles - Main |
|---|
| 1/16-finals | Vithoontien L. | Nishiwaki K. | 2:0 (6:2, 6:3) | details | 20.03.2024 |
 Spain: M15 Torello - Singles - Main |
|---|
| 1/8-finals | Nishiwaki K. | Kirkin E. | 0:2 (1:6, 1:6) | details | 07.03.2024 |
| 1/16-finals | Nishiwaki K. | Lazaro Juncadella M. | 2:0 (6:4, 6:2) | details | 06.03.2024 |
| Spain: M15 Villena 2 - Singles - Main |
|---|
| 1/16-finals | Tabacco F. | Nishiwaki K. | 2:0 (6:3, 6:1) | details | 27.02.2024 |
| Japan: M15 Yanagawa 2 - Singles - Main |
|---|
| 1/16-finals | Nishiwaki K. | Yamasaki J. | 0:2 (3:6, 3:6) | details | 26.12.2023 |
| Japan: M15 Yanagawa - Singles - Main |
|---|
| 1/16-finals | Nishiwaki K. | Kumasaka T. | 1:0 RET. (7:65, 1:3) | details | 20.12.2023 |
| Japan: Yokkaichi - Singles - Qualification |
|---|
| Semi-finals | Puttergill C. | Nishiwaki K. | 2:0 (7:5, 6:2) | details | 26.11.2023 |
| Japan: Matsuyama - Singles - Qualification |
|---|
| Semi-finals | Nishiwaki K. | Noguchi R. | 0:2 (2:6, 5:7) | details | 05.11.2023 |
 India: M25 Dharwad - Singles - Main |
|---|
| Quarter-finals | Nishiwaki K. | Singh D. | 1:2 (4:6, 7:63, 2:6) | details | 20.10.2023 |
| 1/8-finals | Nishiwaki K. | Kamath M. | 2:0 (6:4, 6:4) | details | 19.10.2023 |
| 1/16-finals | Nishiwaki K. | Matsumura R. | 2:0 (6:2, 7:5) | details | 18.10.2023 |
| Japan: M25 Takasaki - Singles - Main |
|---|
| Quarter-finals | Nishiwaki K. | Altamirano C. | 0:2 (3:6, 1:6) | details | 22.09.2023 |
| 1/8-finals | Nishiwaki K. | Vithoontien L. | 2:1 (5:7, 6:4, 6:4) | details | 21.09.2023 |
| 1/16-finals | Nishiwaki K. | Miyamoto T. | 2:0 (6:3, 6:0) | details | 20.09.2023 |
| Japan: M25 Sapporo 2 - Singles - Main |
|---|
| Final | Nakagawa N. | Nishiwaki K. | 2:1 (4:6, 6:1, 6:4) | details | 17.09.2023 |
| Semi-finals | Sekiguchi S. | Nishiwaki K. | 1:2 (6:0, 5:7, 4:6) | details | 16.09.2023 |
| Quarter-finals | Nishiwaki K. | Mochizuki Y. | 2:0 (6:1, 6:3) | details | 16.09.2023 |
| 1/8-finals | Ogura K. | Nishiwaki K. | 1:2 (4:6, 7:5, 2:6) | details | 15.09.2023 |
| 1/16-finals | Nishiwaki K. | Adachi T. | 2:0 (6:1, 6:2) | details | 13.09.2023 |
 Hong Kong: M25 Hong Kong 2 - Singles - Main |
|---|
| Quarter-finals | Nishiwaki K. | Wong C. | 1:2 (2:6, 7:5, 8:10) | details | 09.09.2023 |
| 1/8-finals | Cui J. | Nishiwaki K. | 0:2 (5:7, 4:6) | details | 07.09.2023 |
| 1/16-finals | Altamirano C. | Nishiwaki K. | 0:2 (3:6, 5:7) | details | 06.09.2023 |
 Taiwan: M25 Tainan 2 - Singles - Main |
|---|
| Semi-finals | Nishiwaki K. | Agarwal R. | 0:2 (5:7, 3:6) | details | 26.08.2023 |
| Quarter-finals | Nishiwaki K. | Sueoka Y. | 2:0 (6:2, 6:3) | details | 25.08.2023 |
| 1/8-finals | Wiersholm H. | Nishiwaki K. | 1:2 (3:6, 6:3, 1:6) | details | 24.08.2023 |
| 1/16-finals | Chang Tsu Li | Nishiwaki K. | 0:2 (1:6, 3:6) | details | 22.08.2023 |
| Taiwan: M25 Tainan - Singles - Main |
|---|
| Semi-finals | Ochi M. | Nishiwaki K. | 2:0 (6:2, 7:66) | details | 19.08.2023 |
| Quarter-finals | Ichikawa T. | Nishiwaki K. | 1:1 RET. (6:4, 64:7, 1:3) | details | 18.08.2023 |
| 1/8-finals | Yu C. | Nishiwaki K. | 0:2 (5:7, 3:6) | details | 17.08.2023 |
| 1/16-finals | Nishiwaki K. | Singh D. | 2:1 (65:7, 6:4, 6:3) | details | 16.08.2023 |
 Australia: M15 Caloundra 2 - Singles - Main |
|---|
| 1/8-finals | Becroft I. | Nishiwaki K. | 2:0 (7:66, 6:3) | details | 03.08.2023 |