Stadium: Court 2 Round: 19 Ground: Hardcourt outdoor
| ITF M25 Astana | 2023/08/05 07:45 | Yusuke Takahashi v Sekiguchi, Shuichi | 6-4,6-4 |
| ITF M25 Astana | 2023/08/04 08:45 | Sekiguchi, Shuichi v Egor Agafonov | 7-6,6-1 |
| ITF M25 Astana | 2023/08/03 07:15 | Sekiguchi, Shuichi v S D Prajwal Dev | 6-7,7-5,6-0 |
| ITF M25 Astana | 2023/08/02 05:40 | Ajeet Rai v Sekiguchi, Shuichi | 2-6,1-6 |
| Challenger Astana | 2023/07/24 08:30 | Khumoyun Sultanov v Sekiguchi, Shuichi | 7-6,6-4 |
| ITF - M15 Nakhon Si Thammarat | 2023/07/07 03:40 | Sekiguchi, Shuichi v Maximus Jones | 4-6,7-6,5-7 |
| ITF - M15 Nakhon Si Thammarat | 2023/07/06 03:00 | Sekiguchi, Shuichi v Taisei Ichikawa | 6-2,6-2 |
| ITF - M15 Nakhon Si Thammarat | 2023/07/05 06:20 | Sekiguchi, Shuichi v Credit Chaiyarin | 6-2,6-4 |
| Challenger Zhuhai | 2023/08/20 05:00 | Hsieh, Cheng-Peng v Kalovelonis, Markos | 0-6,2-6 |
| ITF M25 Jakarta | 2023/08/15 02:30 | Kalovelonis, Markos v S D Prajwal Dev | 6-7,3-6 |
| ITF M25 Jakarta | 2023/08/09 05:30 | Kalovelonis, Markos v Mitsuki Wei Kang Leong | 3-6,4-6 |
| ITF M25 Nakhon Si Thammarat | 2023/06/14 02:00 | Kalovelonis, Markos v Finn Reynolds | 3-6,6-4,3-6 |
| ITF M25 Jakarta | 2023/06/08 02:00 | Kalovelonis, Markos v Singh, Digvijaypratap | 3-6,6-3,3-6 |
| ITF M25 Jakarta | 2023/06/07 03:30 | Eric Padgham v Kalovelonis, Markos | 6-7,6-7 |
| ITF M25 Jakarta | 2023/06/01 02:25 | Hiroki Moriya v Kalovelonis, Markos | 7-6,6-2 |
| ITF M25 Jakarta | 2023/05/31 03:00 | Kalovelonis, Markos v Eric Padgham | 7-6,6-7,6-3 |