| Challenger Taipei | 11/03 06:00 | 19 | Leo Vithoontien vs Shinji Hazawa | View |
| Challenger Taipei | 11/02 08:30 | 14 | [264] Nitin Kumar Sinha v Shinji Hazawa [417] | 2-6,2-6 | |
| ITF M15 Hua Hin | 10/31 03:30 | - | [386] Igor Marcondes v Shinji Hazawa [417] | 6-1,6-3 | |
| ITF M15 Hua Hin | 10/30 03:00 | - | Bill Chan v Shinji Hazawa | 5-7,4-6 | |
| ITF M15 Hua Hin | 10/28 05:12 | - | James Van Herzeele v Shinji Hazawa | 6-2,1-6,4-6 | |
| ITF M15 Hua Hin | 10/24 03:00 | - | Arthur Weber v Shinji Hazawa | 6-0,7-6 | |
| ITF M15 Hua Hin | 10/23 03:00 | - | Congsup Congcar v Shinji Hazawa | 2-6,1-6 | |
| ITF M15 Hua Hin | 10/21 03:00 | - | Teerapat Khantiweerawat v Shinji Hazawa | 1-6,1-6 | |
| ITF M25 Perth | 10/08 05:00 | - | [467] Filip Peliwo v Shinji Hazawa [428] | 6-0,4-6,6-3 | |
| ITF M25 Perth | 10/03 02:00 | - | Shinji Hazawa v Emile Hudd | 1-6,2-6 | |
| ITF M25 Perth | 10/02 02:00 | - | [467] Filip Peliwo v Shinji Hazawa [428] | 6-0,6-7,2-6 | |
| ITF M25 Perth | 09/30 03:30 | - | [418] Shinji Hazawa v Joshua Charlton [216] | 7-6,6-1 | |
| ITF M25 Guiyang | 09/17 02:00 | - | Shinji Hazawa v Wishaya Trongcharoenchaikul | 4-6,6-7 |
Shinji Hazawa (羽澤 慎治, Hazawa Shinji; born 12 April 1999) is a Japanese tennis player.
Hazawa has a career high ATP singles ranking of 501 achieved on 27 February 2023. He also has a career high doubles ranking of 249 achieved on 17 April 2023.
Hazawa has won 1 ATP Challenger doubles title at the 2022 Kobe Challenger with Yuta Shimizu.