Stadium: Court B Round: 25 Ground: Hardcourt outdoor
| Challenger Bangkok 2 | 2020/01/20 03:00 | Kasidit Samrej v Kaichi Uchida | 4-6,3-6 |
| Challenger Bangkok | 2020/01/12 07:30 | Kasidit Samrej v Chun Hsin Tseng | 1-6,2-6 |
| ITF M15 Hong Kong | 2020/01/10 02:00 | Kasidit Samrej v Yuta Shimizu | 4-6,4-6 |
| ITF M15 Hong Kong | 2020/01/09 03:25 | Jumpei Yamasaki v Kasidit Samrej | 3-6,4-6 |
| ITF M15 Hong Kong | 2020/01/08 04:30 | Eric Vanshelboim v Kasidit Samrej | 6-7,2-6 |
| ITF M15 Hong Kong | 2020/01/07 03:05 | Kasidit Samrej v Qun Gao | 6-3,7-5 |
| ITF M15 Hong Kong | 2020/01/06 02:00 | Kasidit Samrej v Liang-Yu Lin | 6-2,6-2 |
| ITF M15 Doha | 2019/12/19 10:25 | Karl Friberg v Kasidit Samrej | 4-6,7-6,6-0 |
| 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 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 |