Stadium: Centre Court Round: 25 Ground: Clay
| 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 |
| ITF M25 Nonthaburi | 2020/01/29 07:25 | Kasidit Samrej v Shuichi Sekiguchi | 3-6,2-6 |
| Challenger Bangkok 2 | 2020/01/22 05:25 | Peter Polansky v Shuichi Sekiguchi | 6-3,7-5 |
| ATP Auckland | 2020/01/10 22:00 | Shuichi Sekiguchi v Tatsuma Ito | 3-6,6-4,4-6 |
| ITF M15 Te Anau | 2020/01/04 00:30 | Luke Saville v Shuichi Sekiguchi | 6-3,6-3 |
| ITF M15 Te Anau | 2020/01/02 21:00 | George Stoupe v Shuichi Sekiguchi | 3-6,1-6 |
| ITF M15 Te Anau | 2020/01/01 22:00 | Calum Puttergill v Shuichi Sekiguchi | 6-2,2-6,2-6 |
| ITF M15 Curtea de Arges | 2020/09/17 07:00 | Dragos Dima v Vitaliy Sachko | 4-6,1-6 |
| ITF M15 Curtea de Arges | 2020/09/15 11:45 | Dragos Dima v Dan Alexandru Tomescu | 6-0,6-2 |
| ITF M15 Bucharest | 2020/09/11 09:00 | Timofey Skatov v Dragos Dima | 6-2,6-2 |
| ITF M15 Bucharest | 2020/09/10 07:00 | Dragos Dima v Stefan Palosi | 2-6,6-4,7-5 |
| ITF M15 Bucharest | 2020/09/09 07:00 | Dragos Dima v Carlos Lopez Montagud | 6-3,6-2 |
| ITF M15 Bucharest | 2020/09/08 07:00 | Dragos Dima v Edris Fetisleam | 6-1,6-2 |
| ITF M15 Antalya | 2020/03/11 12:25 | Pol Toledo Bague v Dragos Dima | 6-4,7-6 |
| ITF M15 Antalya | 2020/03/03 07:00 | Dragos Dima v Ivan Davydov | 7-5,6-1 |