Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Toowoomba | 2019/10/05 23:30 | Nicholas Horton v Sam Ryan Ziegann | 7-6,0-6,14-12 |
| ITF M25 Brisbane | 2019/09/29 02:00 | Sam Ryan Ziegann v Nicholas Horton | 2-6,4-6 |
| ITF M15 Cancun | 2019/09/09 15:00 | Sam Ryan Ziegann v Ryotaro Matsumura | 2-6,3-6 |
| ITF M15 Cancun | 2019/08/26 14:30 | Jiaxi Ma v Sam Ryan Ziegann | 6-2,2-6,10-2 |
| ITF M15 Cancun | 2019/08/19 14:30 | Jiaxi Ma v Sam Ryan Ziegann | 3-6,6-3,10-6 |
| ITF M15 Anseong | 2019/06/25 01:00 | Hayeon Seong v Sam Ryan Ziegann | 7-5,6-1 |
| ITF M15 Anseong | 2019/06/24 01:00 | Per Nordstrom v Sam Ryan Ziegann | 3-6,2-6 |
| ITF M15 Gimcheon | 2019/06/17 01:00 | Ren Nakamura v Sam Ryan Ziegann | 2-6,6-2,10-7 |
| 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 |
| Challenger Traralgon | 2019/10/22 02:05 | Dayne Kelly v Shuichi Sekiguchi | 4-6,6-2,6-7 |
| Challenger Ningbo | 2019/10/14 08:25 | Ji Sung Nam v Shuichi Sekiguchi | 6-1,6-1 |