| Challenger Series TT | 2023/10/09 14:30 | Mike Hollo v Sven Happek | W | 3-1 |
| Challenger Series TT | 2023/12/08 07:30 | Mike Hollo v Alvaro Gainza | W | 3-2 |
| Challenger Series TT | 2023/12/07 15:30 | Mike Hollo v Alexander Valuch | L | 0-3 |
| Challenger Series TT | 2023/12/07 12:10 | Mike Hollo v Miguel Nunez | W | 3-1 |
| Challenger Series TT | 2023/12/07 10:10 | Mike Hollo v Samuel Amann | W | 3-0 |
| Challenger Series TT | 2023/12/07 07:30 | Mike Hollo v Max Klink | W | 3-1 |
| Challenger Series TT | 2023/11/21 14:30 | Dauud Cheaib v Mike Hollo | L | 3-1 |
| Challenger Series TT | 2023/11/21 13:05 | Mike Hollo v Norbert Tauler | W | 3-0 |
| Challenger Series TT | 2023/11/21 11:30 | Mike Hollo v Rafael Turrini | W | 3-0 |
| Challenger Series TT | 2023/12/08 08:50 | Sven Happek v Max Klink | W | 3-1 |
| Challenger Series TT | 2023/12/07 16:50 | Alvaro Gainza v Sven Happek | W | 2-3 |
| Challenger Series TT | 2023/12/07 13:30 | Alexander Valuch v Sven Happek | L | 3-0 |
| Challenger Series TT | 2023/12/07 10:50 | Miguel Nunez v Sven Happek | L | 3-2 |
| Challenger Series TT | 2023/12/07 08:10 | Samuel Amann v Sven Happek | W | 0-3 |
| Challenger Series TT | 2023/11/14 09:30 | Liang Qiu v Sven Happek | L | 3-0 |
| Challenger Series TT | 2023/11/14 08:10 | Vidit Desai v Sven Happek | W | 0-3 |
| Challenger Series TT | 2023/11/13 18:10 | Akito Itagaki v Sven Happek | L | 3-2 |