| Challenger Ochsenhausen | 2017/11/23 13:30 | Sven Happek v Gaston Alto | W | 2-3 |
| Challenger Ochsenhausen | 2019/05/20 20:00 | Tomas Konecny v Gaston Alto | W | 1-3 |
| Challenger Ochsenhausen | 2019/05/20 17:20 | Daniel Kleinert v Gaston Alto | L | 3-1 |
| Challenger Ochsenhausen | 2019/05/20 14:40 | Gaston Alto v Lehel Demeter | W | 3-1 |
| Challenger Ochsenhausen | 2019/05/20 10:30 | Gaston Alto v Andrei Putuntica | L | 0-3 |
| Challenger Ochsenhausen | 2019/05/20 08:30 | Gaston Alto v Daniel Gorak | L | 1-3 |
| Croatia Open | 2019/05/15 12:50 | Gaston Alto v Kenji Matsudaira | L | 0-4 |
| Serbia Open | 2019/05/02 08:55 | Gaston Alto v Shogo Tahara | L | 2-3 |
| Serbia Open | 2019/05/01 14:20 | Gaston Alto v Soroosh Amiri Nia | W | 3-2 |
| Challenger Ochsenhausen | 2019/05/20 18:00 | Josip Huzjak v Sven Happek | W | 1-3 |
| Challenger Ochsenhausen | 2019/05/20 16:00 | Andrei Putuntica v Sven Happek | L | 3-2 |
| Challenger Ochsenhausen | 2019/05/20 12:30 | Tomas Konecny v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2019/05/20 11:10 | Daniel Gorak v Sven Happek | L | 3-2 |
| Challenger Ochsenhausen | 2019/05/20 06:30 | Daniel Kleinert v Sven Happek | W | 1-3 |
| Challenger Ochsenhausen | 2019/05/17 09:10 | Sven Happek v Yannick Vostes | L | 0-3 |
| Challenger Ochsenhausen | 2019/05/17 06:30 | Sven Happek v Evgueni Chtchetinine | W | 3-1 |
| Challenger Ochsenhausen | 2019/05/16 09:50 | Sven Happek v Robert Floras | L | 1-3 |