Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/10/05 07:10 | Sven Happek v Alexander Valuch | L | 0-3 |
| Challenger Ochsenhausen | 2022/02/24 17:30 | Sven Happek v Alexander Valuch | L | 0-3 |
| Challenger Ochsenhausen | 2022/01/28 13:05 | Alexander Valuch v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2022/01/27 20:10 | Sven Happek v Alexander Valuch | L | 1-3 |
| Challenger Ochsenhausen | 2021/12/03 11:30 | Sven Happek v Alexander Valuch | L | 2-3 |
| Challenger Ochsenhausen | 2021/11/12 08:50 | Alexander Valuch v Sven Happek | L | 3-2 |
| Challenger Ochsenhausen | 2021/10/28 08:30 | Sven Happek v Alexander Valuch | L | 2-3 |
| Challenger Ochsenhausen | 2021/10/15 07:50 | Alexander Valuch v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/10/09 07:50 | Sven Happek v Rafael Turrini | L | 0-3 |
| Challenger Series TT | 2023/10/06 10:30 | Sven Happek v Guillaume Alcayde | L | 1-3 |
| Challenger Series TT | 2023/10/06 07:50 | Sven Happek v Miguel Nunez | W | 3-2 |
| Challenger Series TT | 2023/10/05 19:10 | Sven Happek v Sushmit Sriram | L | 0-3 |
| Challenger Series TT | 2023/10/05 14:30 | Sven Happek v Akito Itagaki | L | 2-3 |
| Challenger Series TT | 2023/10/05 12:30 | Sven Happek v Hannes Hormann | W | 3-1 |
| Challenger Series TT | 2023/10/05 09:10 | Daniel Rinderer v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/10/05 07:10 | Sven Happek v Alexander Valuch | L | 0-3 |
| Challenger Series TT | 2023/10/09 07:10 | Mike Hollo v Alexander Valuch | W | 1-3 |
| Challenger Series TT | 2023/10/06 12:50 | Sushmit Sriram v Alexander Valuch | L | 3-0 |
| Challenger Series TT | 2023/10/06 12:05 | Alexander Valuch v Guillaume Alcayde | L | 1-3 |
| Challenger Series TT | 2023/10/06 09:50 | Daniel Rinderer v Alexander Valuch | W | 1-3 |
| Challenger Series TT | 2023/10/05 18:30 | Guillaume Alcayde v Alexander Valuch | W | 1-3 |
| Challenger Series TT | 2023/10/05 15:50 | Miguel Nunez v Alexander Valuch | W | 1-3 |
| Challenger Series TT | 2023/10/05 13:50 | Sushmit Sriram v Alexander Valuch | L | 3-1 |
| Challenger Series TT | 2023/10/05 09:50 | Akito Itagaki v Alexander Valuch | W | 0-3 |