Round: 26 Ground: Clay
| Challenger Ismaning MD | 2019/10/15 17:30 | Lenz J / Masur D v Drzewiecki/Walkow | 4-6,4-6 |
| ATP Hamburg MD | 2019/07/25 09:30 | Haase R / Koolhof W v Lenz J / Masur D | 7-6,6-4 |
| ATP Hamburg MD | 2019/07/24 11:00 | Lenz J / Masur D v Zverev A / Zverev M | 4-6,6-3,11-9 |
| ATP Hamburg MD | 2019/07/21 16:15 | Lenz J / Masur D v Podlipnik-Castillo H / Vega Hernandez D | 6-3,6-2 |
| ATP Hamburg MD | 2019/07/20 15:45 | Arneodo R / Vasilevski A v Lenz J / Masur D | 2-6,3-6 |
| ITF Switzerland F2 MD | 2018/02/15 16:04 | Desein N / Olivetti A v Lenz J / Masur D | 6-4,7-6 |
| ITF Switzerland F2 MD | 2018/02/15 16:00 | Desein N / Olivetti A v Lenz J / Masur D | 6-4,7-6 |
| ITF Switzerland F2 MD | 2018/02/14 15:55 | Lenz J / Masur D v Jaloviec M / Vrbensky M | 7-6,7-6 |