| Challenger Ochsenhausen | 2020/12/02 08:50 | Sven Happek v Carlos Ishida | L | 1-3 |
| Challenger Ochsenhausen | 2020/11/18 08:10 | Sven Happek v Carlos Ishida | L | 1-3 |
| Challenger Ochsenhausen | 2020/03/19 12:10 | Sven Happek v Carlos Ishida | L | 1-3 |
| Challenger Ochsenhausen | 2020/03/16 16:20 | Carlos Ishida v Sven Happek | W | 2-3 |
| Challenger Ochsenhausen | 2019/11/20 13:30 | Carlos Ishida v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2019/01/10 12:10 | Carlos Ishida v Sven Happek | L | 3-2 |
| Challenger Series TT | 2022/02/25 07:30 | Sven Happek v Josip Huzjak | W | 3-2 |
| Challenger Series TT | 2022/02/24 18:50 | Sven Happek v Dillon Chambers | L | 1-3 |
| Challenger Ochsenhausen | 2022/02/24 17:30 | Sven Happek v Alexander Valuch | L | 0-3 |
| Challenger Series TT | 2022/02/24 12:50 | Sven Happek v Amirreza Abbasi | L | 1-3 |
| Challenger Series TT | 2022/02/24 10:10 | Sven Happek v Matteo Mutti | L | 1-3 |
| Challenger Series TT | 2022/02/24 07:30 | Sven Happek v Daniel Rinderer | L | 1-3 |
| Challenger Ochsenhausen | 2022/02/11 08:50 | Jakub Seibert v Sven Happek | W | 2-3 |
| Challenger Ochsenhausen | 2022/02/11 08:10 | Eric Jouti v Sven Happek | L | 3-2 |
| Challenger Ochsenhausen | 2020/12/04 09:30 | Florian Bluhm v Carlos Ishida | L | 3-0 |
| Challenger Ochsenhausen | 2020/12/04 08:10 | Andrei Putuntica v Carlos Ishida | L | 3-1 |
| Challenger Ochsenhausen | 2020/12/03 10:50 | Carlos Ishida v Liang Qiu | L | 0-3 |
| Challenger Ochsenhausen | 2020/12/03 08:10 | Carlos Ishida v Dauud Cheaib | L | 0-3 |
| Challenger Ochsenhausen | 2020/12/03 07:30 | Evgueni Chtchetinine v Carlos Ishida | L | 3-0 |
| Challenger Ochsenhausen | 2020/12/02 11:30 | Fedor Kuzmin v Carlos Ishida | L | 3-0 |
| Challenger Ochsenhausen | 2020/12/02 08:50 | Sven Happek v Carlos Ishida | W | 1-3 |
| Challenger Ochsenhausen | 2020/11/20 11:30 | Florian Bluhm v Carlos Ishida | L | 3-1 |