| Challenger Series TT | 2024/05/06 10:00 | Sven Happek v Mike Hollo | L | 2-3 |
| Challenger Series TT | 2024/04/08 08:15 | Sven Happek v Mike Hollo | L | 2-3 |
| Challenger Series TT | 2024/03/21 09:15 | Mike Hollo v Sven Happek | L | 3-0 |
| Challenger Series TT | 2024/03/11 14:10 | Sven Happek v Mike Hollo | L | 0-3 |
| Challenger Series TT | 2023/12/08 10:10 | Mike Hollo v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/10/09 14:30 | Mike Hollo v Sven Happek | L | 3-1 |
| Challenger Series TT | 2024/12/09 15:00 | Sven Happek v Petr David | L | 1-3 |
| Challenger Series TT | 2024/12/09 11:30 | Sven Happek v Mykhailo Mosiuk | W | 3-2 |
| Challenger Series TT | 2024/12/09 09:30 | Sven Happek v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2024/12/09 07:30 | Sven Happek v Matias Danzer | W | 3-2 |
| Challenger Series TT | 2024/11/12 11:30 | Sven Happek v Marius Henninger | W | 3-1 |
| Challenger Series TT | 2024/11/12 10:15 | Dauud Cheaib v Sven Happek | L | 3-0 |
| Challenger Series TT | 2024/11/12 09:30 | Pylyp Koloidenko v Sven Happek | W | 0-3 |
| Challenger Series TT | 2024/11/11 18:00 | Dauud Cheaib v Sven Happek | L | 3-1 |
| Challenger Series TT | 2024/12/09 14:30 | Mike Hollo v Humberto Manhani | W | 3-1 |
| Challenger Series TT | 2024/12/09 12:30 | Mike Hollo v Szilard Kanabe | W | 3-0 |
| Challenger Series TT | 2024/12/09 11:00 | Mike Hollo v Matias Danzer | L | 1-3 |
| Challenger Series TT | 2024/12/09 09:00 | Petr David v Mike Hollo | W | 2-3 |
| Challenger Series TT | 2024/11/05 11:00 | Florian Bluhm v Mike Hollo | L | 3-2 |
| Challenger Series TT | 2024/11/05 10:15 | Dauud Cheaib v Mike Hollo | L | 3-1 |
| Challenger Series TT | 2024/11/05 09:00 | Sushmit Sriram v Mike Hollo | W | 2-3 |
| Challenger Series TT | 2024/11/04 16:30 | Dimitrije Levajac v Mike Hollo | L | 3-2 |