Stadium: Center Round: 28 Ground: Hardcourt outdoor
| Challenger Kobe | 2018/11/16 04:45 | Yunseong Chung v Tatsuma Ito | 2-6,3-6 |
| Challenger Nanchang | 2018/04/17 03:00 | Yunseong Chung v Tatsuma Ito | 6-4,7-6 |
| Challenger Kobe | 2019/11/05 05:35 | Yunseong Chung v Yuichi Sugita | 1-6,4-6 |
| Challenger Kobe | 2019/11/04 04:00 | Yunseong Chung v Yusuke Takahashi | 7-6,7-6 |
| Challenger Shenzhen 2 | 2019/10/29 02:00 | Yunseong Chung v Jonas Forejtek | 4-6,3-6 |
| Challenger Liuzhou | 2019/10/23 02:00 | Yunseong Chung v Alejandro Davidovich Fokina | 5-7,5-7 |
| Challenger Liuzhou | 2019/10/21 06:00 | Yunseong Chung v Takuto Niki | 6-2,7-6 |
| Challenger Ningbo | 2019/10/16 03:35 | Yunseong Chung v Danilo Petrovic | 3-6,3-6 |
| Challenger Ningbo | 2019/10/15 02:00 | Yunseong Chung v Aoran Wang | 1-6,6-2,6-1 |
| Challenger Kaohsiung | 2019/09/17 01:30 | Yunseong Chung v Miliaan Niesten | 4-6,3-6 |
| Challenger Playford 2 | 2019/11/01 01:50 | Alex Bolt v Tatsuma Ito | 5-7,4-6 |
| Challenger Playford 2 | 2019/10/31 03:30 | Blake Mott v Tatsuma Ito | 4-6,6-7 |
| Challenger Playford 2 | 2019/10/30 01:20 | Brydan Klein v Tatsuma Ito | 4-6,4-6 |
| Challenger Traralgon | 2019/10/26 06:15 | Andrew Harris v Tatsuma Ito | 4-6,7-6,7-6 |
| Challenger Traralgon | 2019/10/24 23:00 | Max Purcell v Tatsuma Ito | 5-7,1-6 |
| Challenger Traralgon | 2019/10/24 02:50 | Harry Bourchier v Tatsuma Ito | 4-6,6-4,3-6 |
| Challenger Traralgon | 2019/10/22 23:00 | Bradley Mousley v Tatsuma Ito | 4-6,3-6 |
| Challenger Ningbo | 2019/10/17 06:50 | Tatsuma Ito v Frederico Ferreira Silva | 4-6,6-7 |