Stadium: Show Court Round: 25 Ground: Hardcourt outdoor
| Challenger Kaohsiung | 2017/10/04 03:00 | Lukas Lacko v Yan Bai | 7-5,6-2 |
| Challenger Gwangju | 2019/05/14 03:30 | Yan Bai v Ji Hoon Son | 7-6,2-6,6-3 |
| ITF M25 Wuhan | 2019/05/12 02:00 | Yan Bai v Shuichi Sekiguchi | 6-2,6-4 |
| ITF M25 Wuhan | 2019/05/11 02:00 | Yan Bai v Yu Hsiou Hsu | 6-4,6-4 |
| ITF M25 Wuhan | 2019/05/10 02:00 | Yan Bai v Fajing Sun | 7-6,6-1 |
| ITF M25 Wuhan | 2019/05/09 03:10 | Yan Bai v Daisuke Sumizawa | 6-3,6-1 |
| ITF M25 Wuhan | 2019/05/08 02:00 | Yan Bai v Ti Chen | 6-2,6-2 |
| Challenger Seoul | 2019/05/01 02:00 | Yan Bai v Evgeny Donskoy | 6-4,3-6,3-6 |
| Challenger Seoul | 2019/04/30 03:25 | Yan Bai v Jacob Grills | 6-4,6-1 |
| Challenger Busan | 2019/05/09 07:05 | Lukas Lacko v Yasutaka Uchiyama | 6-3,4-6,0-6 |
| Challenger Busan | 2019/05/08 03:00 | Lukas Lacko v Luke Saville | 3-6,6-3,6-4 |
| Challenger Seoul | 2019/05/02 02:00 | Lukas Lacko v Tatsuma Ito | 4-6,1-6 |
| Challenger Seoul | 2019/05/01 02:00 | Lukas Lacko v Luke Saville | 6-3,6-4 |
| Challenger Taipei | 2019/04/11 03:00 | Lukas Lacko v Yuichi Sugita | 6-3,3-6,4-6 |
| Challenger Taipei | 2019/04/09 08:40 | Lukas Lacko v Marc-Andrea Huesler | 4-6,7-6,6-2 |
| ATP Miami | 2019/03/21 15:00 | Robin Haase v Lukas Lacko | 6-2,6-4 |
| ATP Miami | 2019/03/18 14:00 | Juan Ignacio Londero v Lukas Lacko | 4-6,1-6 |