| ITF - M25 Takasaki | 09/18 01:00 | - | Shinji Hazawa vs Oliver Bonding | View |
| ITF - M25 Sapporo | 09/10 03:05 | 25 | Masamichi Imamura v Shinji Hazawa | 6-1,6-2 | |
| ITF - M25 Sapporo | 09/05 04:25 | 26 | Goncalo Oliveira v Shinji Hazawa | 6-1,6-2 | |
| ITF - M25 Sapporo | 09/03 02:00 | 25 | Hiroki Sakagawa v Shinji Hazawa | 6-7,3-6 | |
| ITF - M15 Monastir | 08/14 14:30 | 25 | Shinji Hazawa v Savva Polukhin | 2-6,3-6 | |
| ITF - M15 Monastir | 08/12 17:00 | 62 | Shinji Hazawa v Federico Bove | 6-2,6-2 | |
| ITF - M15 Monastir | 08/12 08:00 | 62 | Shinji Hazawa v Rayen Hermassi | 6-0,6-1 | |
| ITF - M15 Monastir | 08/05 08:00 | 62 | Shinji Hazawa v Zaid Mashni | 5-7,2-6 | |
| ITF - M15 Monastir | 08/04 08:00 | 62 | Shinji Hazawa v Sergio Badini | 6-0,6-2 | |
| ITF - M15 Monastir | 08/03 08:00 | 28 | Samir Hamza Reguig v Shinji Hazawa | 6-2,4-6,6-3 | |
| ITF - M15 Monastir | 08/02 08:00 | 27 | Devin Badenhorst v Shinji Hazawa | Retired | |
| ITF - M15 Monastir | 08/01 08:00 | 26 | Shinji Hazawa v Nathan Trouve | 7-5,7-5 | |
| ITF - M15 Monastir | 07/31 09:40 | 25 | Shinji Hazawa v Mousa Alkotop | 6-3,6-7,7-6 |
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.