Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/12/07 16:50 | Alvaro Gainza v Sven Happek | L | 2-3 |
| Challenger Series TT | 2023/09/19 09:50 | Sven Happek v Alvaro Gainza | W | 1-3 |
| Challenger Series TT | 2023/04/25 08:30 | Sven Happek v Alvaro Gainza | W | 0-3 |
| Challenger Series TT | 2023/02/27 18:50 | Sven Happek v Alvaro Gainza | L | 3-1 |
| Challenger Ochsenhausen | 2022/05/19 16:30 | Alvaro Gainza v Sven Happek | L | 1-3 |
| Challenger Series TT | 2024/03/21 14:30 | Alvaro Gainza v Mike Hollo | L | 0-3 |
| Challenger Series TT | 2024/03/21 11:35 | Alvaro Gainza v Reda Nemras | W | 3-1 |
| Challenger Series TT | 2024/03/21 09:50 | Alvaro Gainza v Rafael Turrini | W | 3-2 |
| Challenger Series TT | 2024/03/21 07:30 | Alvaro Gainza v Finn Luu | W | 3-2 |
| Challenger Series TT | 2023/12/08 13:10 | Alvaro Gainza v Mike Hollo | L | 2-3 |
| Challenger Series TT | 2023/12/08 11:45 | Alexander Valuch v Alvaro Gainza | L | 3-2 |
| Challenger Series TT | 2023/12/08 10:50 | Samuel Amann v Alvaro Gainza | W | 0-3 |
| Challenger Series TT | 2023/12/08 07:30 | Mike Hollo v Alvaro Gainza | L | 3-2 |
| Challenger Series TT | 2024/03/21 09:15 | Mike Hollo v Sven Happek | L | 3-0 |
| Challenger Series TT | 2024/03/19 08:10 | Norbert Tauler v Sven Happek | L | 3-1 |
| Challenger Series TT | 2024/03/18 18:10 | Ronit Bhanja v Sven Happek | W | 1-3 |
| Challenger Series TT | 2024/03/18 16:10 | Armin Alicic v Sven Happek | L | 3-1 |
| Challenger Series TT | 2024/03/18 14:50 | Sven Happek v Amirreza Abbasi | L | 2-3 |
| Challenger Series TT | 2024/03/18 12:50 | Sven Happek v Joon Shim | L | 1-3 |
| Challenger Series TT | 2024/03/18 09:30 | Damian Zech v Sven Happek | W | 2-3 |
| Challenger Series TT | 2024/03/12 09:25 | Akos Kishegyi v Sven Happek | W | 1-3 |