Stadium: Centre Court Round: 25 Ground: Hardcourt indoor
| ITF M25 - Rodez | 2020/10/14 12:20 | Maxime Hamou v Shuichi Sekiguchi | 4-6,7-6,7-6 |
| ITF M25 - Porto | 2020/10/03 09:00 | Shuichi Sekiguchi v Gastao Elias | 2-6,3-6 |
| ITF M25 - Porto | 2020/10/01 13:00 | Shuichi Sekiguchi v Patrik Niklas-Salminen | 3-6,6-2,6-3 |
| ITF M25 - Porto | 2020/09/30 14:15 | Shuichi Sekiguchi v Sadio Doumbia | 6-4,7-6 |
| Challenger - Sibiu | 2020/09/23 11:50 | Shuichi Sekiguchi v Felipe Meligeni Rodrigues Alves | 2-6,3-6 |
| Challenger - Sibiu | 2020/09/22 08:00 | Shuichi Sekiguchi v Dragos Dima | 7-5,7-6 |
| ITF M25 - Nonthaburi | 2020/01/31 05:00 | Matija Pecotic v Shuichi Sekiguchi | 6-2,7-5 |
| ITF M25 - Nonthaburi | 2020/01/30 07:05 | Jung-Woong Na v Shuichi Sekiguchi | 1-6,4-6 |
| Challenger - Potchefstroom | 2021/02/19 10:20 | Cem Ilkel v Jenson Brooksby | 1-6,4-6 |
| Challenger - Potchefstroom | 2021/02/18 08:00 | Cem Ilkel v Chun Hsin Tseng | 7-6,7-5 |
| Challenger - Potchefstroom | 2021/02/16 09:35 | Cem Ilkel v Julien Cagnina | 6-1,7-6 |
| Challenger - Potchefstroom | 2021/02/13 10:20 | Cem Ilkel v Liam Broady | 6-7,4-6 |
| Challenger - Potchefstroom | 2021/02/12 11:55 | Dimitar Kuzmanov v Cem Ilkel | 6-4,3-6,2-6 |
| Challenger - Potchefstroom | 2021/02/11 08:00 | Julien Cagnina v Cem Ilkel | 2-6,3-6 |
| Challenger - Potchefstroom | 2021/02/09 13:25 | Jenson Brooksby v Cem Ilkel | 3-6,4-6 |
| Challenger - Antalya | 2021/02/02 11:25 | Jozef Kovalik v Cem Ilkel | 6-3,6-1 |