Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Te Anau | 2019/12/30 21:00 | Chanchai Sookton-Eng v George Stoupe | 6-7,5-7 |
| ITF M15 Te Anau | 2020/01/01 22:00 | Calum Puttergill v Shuichi Sekiguchi | 6-2,2-6,2-6 |
| ITF M15 Te Anau | 2019/12/31 05:15 | Sam Ryan Ziegann v Shuichi Sekiguchi | 2-6,3-6 |
| Challenger Pune | 2019/11/14 06:30 | Shuichi Sekiguchi v Roberto Ortega-Olmedo | 2-6,4-6 |
| Challenger Pune | 2019/11/12 07:45 | Shuichi Sekiguchi v Roman Blokhin | 6-3,6-0 |
| Challenger Kobe | 2019/11/04 02:40 | Ben Patael v Shuichi Sekiguchi | 6-3,6-2 |
| Challenger Playford 2 | 2019/10/31 02:55 | Marc Polmans v Shuichi Sekiguchi | 6-3,6-4 |
| Challenger Playford 2 | 2019/10/29 02:20 | Matthew Romios v Shuichi Sekiguchi | 3-6,1-6 |
| Challenger Traralgon | 2019/10/24 02:45 | Yasutaka Uchiyama v Shuichi Sekiguchi | 6-4,3-6,7-5 |