Stadium: CEE Logistic Round: 27 Ground: Clay
| ITF M15 Alaminos-Larnaca | 2023/04/23 07:00 | Tim Ruehl v Christian Fellin | 6-7,4-6 |
| ITF M25 Fort Worth | 2019/10/20 15:00 | Jacob Fearnley v Tim Ruehl | 6-2,6-4 |
| ITF USA F33 | 2018/11/20 19:55 | Mark Whitehouse v Tim Ruehl | 6-2,6-3 |
| ITF USA F33 | 2018/11/18 16:05 | Tim Ruehl v John Mercer | 6-3,6-0 |
| ITF USA F27 | 2018/10/08 16:50 | Tim Ruehl v Jonathan Chang | 1-6,6-7 |
| ITF USA F27 | 2018/10/07 15:00 | Tim Ruehl v Noah Schachter | 6-4,6-2 |
| ITF USA F27 | 2018/10/06 18:00 | Tim Ruehl v Toby D. Boyer | 6-7,6-4,6-2 |
| ITF USA F26 | 2018/09/27 17:00 | Tim Ruehl v Strong Kirchheimer | 1-6,3-6 |
| Challenger Ortisei | 2022/10/23 10:45 | Nicola Kuhn v Terence Atmane | 6-7,4-6 |
| Challenger Hamburg | 2022/10/19 12:15 | Nicola Kuhn v Jelle Sels | 6-4,4-6,1-6 |
| Challenger Nonthaburi | 2022/09/06 03:00 | Yuta Shimizu v Nicola Kuhn | 6-1,6-2 |
| Challenger Nonthaburi | 2022/08/25 06:00 | Nicola Kuhn v Valentin Vacherot | 5-7,3-6 |
| Challenger Nonthaburi | 2022/08/23 03:30 | Nicola Kuhn v Benjamin Lock | 7-5,6-3 |
| Challenger Liberec | 2022/08/02 12:40 | Jiri Lehecka v Nicola Kuhn | 6-2,6-1 |
| Challenger Segovia | 2022/07/27 16:00 | Hugo Grenier v Nicola Kuhn | 6-4,6-4 |
| Challenger Segovia | 2022/07/26 09:45 | Adrian Menendez-Maceiras v Nicola Kuhn | 2-6,4-6 |