 Japan: Yokohama - Doubles - Main |
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| 1/8-finals | Chung Y./Gonzales R. | Hazawa S./Imamura M. | 2:0 (7:5, 6:2) | details | 22.11.2023 |
| Japan: Kobe - Doubles - Main |
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| 1/8-finals | Hazawa S./Shimizu Y. | Raja P./Ramanathan R. | 1:2 (7:66, 4:6, 5:10) | details | 15.11.2023 |
 Asia: Asian Games - Mixed Doubles - Main |
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| 1/8-finals | Shimizu A./Hazawa S. | Bhosale R./Bopanna R. | 0:2 (3:6, 4:6) | details | 27.09.2023 |
| Asia: Asian Games - Doubles - Main |
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| Quarter-finals | Hazawa S./Uesugi K. | Hong S. C./Kwon S. | 0:2 (2:6, 4:6) | details | 27.09.2023 |
| Asia: Asian Games - Mixed Doubles - Main |
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| 1/16-finals | Shimizu A./Hazawa S. | Chogsomjav M./Munkhbaatar B. | 2:1 (6:0, 2:6, 11:9) | details | 26.09.2023 |
| Asia: Asian Games - Doubles - Main |
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| 1/8-finals | Hazawa S./Uesugi K. | Yevseyev D./Zhukayev B. | 2:0 (7:5, 7:5) | details | 25.09.2023 |
| 1/16-finals | Hazawa S./Uesugi K. | Baatar O./Puntsag S. | 2:0 (6:0, 6:0) | details | 24.09.2023 |
 Thailand: M15 Nakhon Si Thammarat 3 - Doubles - Main |
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| 1/8-finals | Bayldon B./Isaro P. | Hazawa S./Matsuda K. | 2:1 (6:3, 3:6, 12:10) | details | 04.07.2023 |
| Thailand: M25 Nakhon Si Thammarat - Doubles - Main |
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| Quarter-finals | Ellis B./Hazawa S. | Congcar C./Kimhi O. | 1:2 (6:3, 66:7, 6:10) | details | 15.06.2023 |
| 1/8-finals | Ellis B./Hazawa S. | Matsuda K./Taguchi R. | 2:0 (6:1, 6:4) | details | 13.06.2023 |
| Thailand: M15 Nakhon Si Thammarat 2 - Doubles - Main |
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| Final | Bayldon B./Ellis B. | Hazawa S./Taguchi R. | 0:2 (4:6, 5:7) | details | 10.06.2023 |
| Semi-finals | Kovapitukted P./Sornlaksup P. | Hazawa S./Taguchi R. | 1:2 (6:2, 3:6, 5:10) | details | 09.06.2023 |
| Quarter-finals | Koaykul K./Suksumrarn T. | Hazawa S./Taguchi R. | 1:2 (6:4, 3:6, 8:10) | details | 09.06.2023 |
| 1/8-finals | Hazawa S./Taguchi R. | Banthia S./Reynolds F. | 2:0 (7:64, 6:4) | details | 06.06.2023 |
| Thailand: M15 Nakhon Si Thammarat - Doubles - Main |
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| Final | Charoenphon Y./Samrej K. | Hazawa S./Taguchi R. | 2:1 (610:7, 7:61, 10:5) | details | 03.06.2023 |
| Semi-finals | Hazawa S./Taguchi R. | Banthia S./Reynolds F. | 2:1 (6:4, 67:7, 10:3) | details | 02.06.2023 |
| Quarter-finals | Chaiyarin C./Chanta T. | Hazawa S./Taguchi R. | 0:2 (2:6, 4:6) | details | 01.06.2023 |
| 1/8-finals | Hazawa S./Taguchi R. | Agarwal R./Dev S D P. | 2:0 (6:3, 6:2) | details | 30.05.2023 |
 South Korea: Busan - Doubles - Main |
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| 1/8-finals | Hazawa S./Palan D. | Choe J./Park U. | 0:2 (3:6, 4:6) | details | 10.05.2023 |
| Japan: M25 Kashiwa - Doubles - Main |
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| Quarter-finals | Katayama S./Takeru Y. | Hazawa S./Shimizu Y. | 2:0 (6:0, 6:3) | details | 06.04.2023 |
| 1/8-finals | Chikami S./Masabayashi T. | Hazawa S./Shimizu Y. | 1:2 (5:7, 6:3, 7:10) | details | 04.04.2023 |
| Japan: M25 Tsukuba - Doubles - Main |
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| Final | Hazawa S./Shiraishi H. | Hsu Y. H./Huang T. | 1:2 (66:7, 6:3, 5:10) | details | 01.04.2023 |
| Semi-finals | Matsui T./Uesugi K. | Hazawa S./Shiraishi H. | 1:2 (7:5, 4:6, 8:10) | details | 31.03.2023 |
| Quarter-finals | Hazawa S./Shiraishi H. | Moriya G./Nakamura G. | 2:0 (6:2, 6:1) | details | 30.03.2023 |
| 1/8-finals | Kawakami R./Tajima N. | Hazawa S./Shiraishi H. | 0:1 RET. (63:7, 0:4) | details | 29.03.2023 |
Mexico: Puerto Vallarta - Singles - Qualification