Stadium: Ochsenhausen, Germany
| Challenger Ochsenhausen | 2020/02/07 12:25 | Sushmit Sriram v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2020/02/06 12:10 | Sven Happek v Sushmit Sriram | L | 0-3 |
| Challenger Ochsenhausen | 2019/04/12 09:50 | Sven Happek v Sushmit Sriram | L | 0-3 |
| Challenger Ochsenhausen | 2018/11/23 07:30 | Sven Happek v Sushmit Sriram | L | 2-3 |
| Challenger Ochsenhausen | 2018/01/10 10:50 | Sven Happek v Sushmit Sriram | L | 1-3 |
| Challenger Ochsenhausen | 2017/12/07 11:30 | Sven Happek v Sushmit Sriram | W | 3-1 |
| Challenger Series TT | 2023/01/24 09:30 | Sven Happek v Martin Andersen | W | 3-1 |
| Challenger Series TT | 2023/01/24 07:30 | Sven Happek v Enio Mendes | L | 0-3 |
| Challenger Series TT | 2023/01/23 17:30 | Sven Happek v Enzo Angles | L | 1-3 |
| Challenger Series TT | 2023/01/23 16:50 | Sven Happek v Tibor Spanik | L | 0-3 |
| Challenger Series TT | 2023/01/23 12:50 | Sven Happek v Yannick Vostes | L | 0-3 |
| Challenger Series TT | 2023/01/23 10:10 | Sven Happek v Kestutis Zeimys | L | 0-3 |
| Challenger Series TT | 2023/01/23 07:30 | Sven Happek v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/01/13 14:30 | Bohdan Sinkevych v Sven Happek | L | 3-0 |
| Challenger Series TT | 2022/09/30 09:50 | Dennis Klein v Sushmit Sriram | W | 1-3 |
| Challenger Series TT | 2022/09/30 08:30 | Sushmit Sriram v Kirill Fadeev | L | 2-3 |
| Challenger Series TT | 2022/09/29 18:30 | Rafael De Las Heras v Sushmit Sriram | L | 3-1 |
| Challenger Series TT | 2022/09/29 15:50 | Daniel Rinderer v Sushmit Sriram | L | 3-1 |
| Challenger Series TT | 2022/09/29 13:50 | Patrik Juhasz v Sushmit Sriram | W | 1-3 |
| Challenger Series TT | 2022/09/29 09:50 | Samuel Amann v Sushmit Sriram | W | 1-3 |
| Challenger Series TT | 2022/09/29 07:10 | Florian Bluhm v Sushmit Sriram | L | 3-0 |
| Challenger Ochsenhausen | 2022/03/25 08:50 | Simon Berglund v Sushmit Sriram | L | 3-0 |