| Hungarian Int. Qual | 2019/10/30 12:20 | Nicolas A. Mueller v Tsai, Andy | W | 0-2 |
| Bulgarian Int. | 2019/10/05 08:00 | Tsai, Andy v Dimitar Yanakiev | L | 0-2 |
| Bulgarian Int. | 2019/10/04 15:17 | Sesalan, Enis v Tsai, Andy | W | 1-2 |
| Bulgarian Int. | 2019/10/04 13:00 | Sesalan, Enis v Tsai, Andy | W | 1-2 |
| Polish Int. Qual | 2019/09/19 16:55 | Harry Huang v Tsai, Andy | L | 2-0 |
| Polish Int. Qual | 2019/09/19 13:25 | Pahatouridis, Philip v Tsai, Andy | W | 1-2 |
| Belarus Int. Qual | 2019/08/29 09:45 | Nicolas A. Mueller v Tsai, Andy | L | 2-1 |
| Denmark Int. Qual | 2019/05/09 13:40 | Correl, Peter v Tsai, Andy | W | 0-2 |
| Dutch Open | 2019/10/10 14:50 | Rossi, Leo v Li, S. F. | L | 0-2 |
| Dutch Open | 2019/10/09 17:50 | Rouxel, Thomas v Rossi, Leo | W | 1-2 |
| Dutch Open | 2019/10/08 16:35 | Rossi, Leo v Mithun Manjunath | W | 2-1 |
| Dutch Open (GP) 2017, Qualification | 2019/10/08 09:10 | Joran Kweekel v Rossi, Leo | W | 1-2 |
| Czech Open | 2019/09/28 09:00 | Dolan, Jonathan v Rossi, Leo | L | 2-0 |
| Bulgarian Open | 2019/08/13 09:40 | Rossi, Leo v Heino, Iikka | W | 2-1 |
| Spanish Int. Qual | 2019/06/12 13:30 | Rossi, Leo v Karan Rajan Rajarajan | L | 1-2 |
| Latvia Int. | 2019/06/01 14:00 | Rossi, Leo v Aram Mahmoud | L | 1-2 |