Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/02/27 07:30 | Sven Happek v Sushmit Sriram | L | 0-3 |
| 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 | 2023/06/27 09:50 | Marius Henninger v Sven Happek | L | 3-2 |
| Challenger Series TT | 2023/06/27 08:30 | Sven Happek v Liang Qiu | L | 0-3 |
| Challenger Series TT | 2023/06/26 18:30 | Benjamin Fruchart v Sven Happek | L | 3-0 |
| Challenger Series TT | 2023/06/26 15:50 | Antonin Gavlas v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/06/26 13:50 | Carlo Rossi v Sven Happek | L | 3-2 |
| Challenger Series TT | 2023/06/26 09:50 | Damian Zech v Sven Happek | W | 2-3 |
| Challenger Series TT | 2023/06/26 07:10 | Makoto Nogami v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/06/23 09:10 | Sven Happek v Carlo Rossi | L | 2-3 |
| TT Star Series | 2023/03/09 11:15 | Sushmit Sriram v Abdel Kader Salifou | W | 3-2 |
| TT Star Series | 2023/03/09 09:15 | Sushmit Sriram v Jakub Kaucky | W | 3-0 |
| TT Star Series | 2023/03/09 07:00 | Sushmit Sriram v Jakub Seibert | L | 1-3 |
| TT Star Series | 2023/03/08 13:15 | Sushmit Sriram v Hampus Nordberg | W | 3-1 |
| TT Star Series | 2023/03/08 11:45 | Sushmit Sriram v Tomas Tregler | L | 0-3 |
| TT Star Series | 2023/03/08 09:15 | Petr David v Sushmit Sriram | L | 3-1 |
| TT Star Series | 2023/03/08 07:35 | Sushmit Sriram v Roman Rezetka | W | 3-2 |
| Challenger Series TT | 2023/02/28 14:30 | Sushmit Sriram v Dauud Cheaib | L | 2-3 |