| Dutch Open (GP) 2017, Qualification | 2019/10/08 09:10 | Arnaud Merkle v Opti, Soren | W | 2-0 |
| Belgian International 2019, MS | 2019/09/12 12:35 | Arnaud Merkle v Ho-Shue, Jason Anthony | L | 1-2 |
| Hellas Open | 2019/08/10 15:00 | Sholeh Aidil v Arnaud Merkle | L | 2-1 |
| Hellas Open | 2019/08/10 07:30 | Arnaud Merkle v Tze Yong Ng | W | 2-0 |
| Hellas Open | 2019/08/09 14:00 | Milic, Luka v Arnaud Merkle | W | 0-2 |
| Spanish Int. | 2019/06/14 09:00 | Arnaud Merkle v Pablo Abian | L | 0-2 |
| Spanish Int. Qual | 2019/06/13 07:00 | Arnaud Merkle v Tobias Kuenzi | W | 2-0 |
| Dutch Int. - | 2019/04/13 14:00 | Mads Christophersen v Arnaud Merkle | L | 2-0 |
| Indonesia Masters | 2019/10/03 08:45 | Sun, F. v Liu, H. C. | L | 2-1 |
| Indonesia Masters | 2019/10/02 10:20 | Wijayanto, Handoko Yusuf v Liu, H. C. | W | 1-2 |
| Indonesia Masters | 2019/10/01 10:50 | Omoto, S. v Liu, H. C. | W | 1-2 |
| Belarus Int. | 2019/08/31 15:00 | Liu, H. C. v Weng, H. Y. | L | 0-2 |
| Belarus Int. | 2019/08/30 14:30 | Kirchmayr, Christian v Liu, H. C. | W | 0-2 |
| US Open 2019, MS, Qualification | 2019/07/09 20:55 | Liu, H. C. v Chun-Yi Lin | L | 1-2 |
| Canada Open | 2019/07/04 22:40 | Liu, H. C. v Li, S. F. | L | 1-2 |
| Canada Open | 2019/07/03 17:00 | Liu, H. C. v Zhou, Z. Q. | W | 2-0 |