| Austria Bundesliga | 2019/09/08 09:00 | Melzer, Jurgen v Hampel, Lenny | 7-6,6-2 |
| Austrian Pro Series Singles | 2020/05/28 17:40 | Melzer, Jurgen v Andrejic, Marko | 6-1,6-1 |
| Austrian Pro Series Singles | 2020/05/27 10:20 | Melzer, Jurgen v Jurij Rodionov | 6-4,1-6,7-6 |
| Austria Bundesliga | 2019/09/08 09:00 | Melzer, Jurgen v Hampel, Lenny | 7-6,6-2 |
| Winston-Salem, USA | 2019/08/17 16:00 | Fratangelo, Bjorn v Melzer, Jurgen | 6-4,6-4 |
| Challenger - Aix en Provence | 2019/05/07 09:30 | Steven Diez v Melzer, Jurgen | 6-3,6-3 |
| Challenger - Aix en Provence | 2019/05/06 08:30 | Melzer, Jurgen v Dan Added | 5-7,1-6 |
| Marbella, Spain | 2019/03/27 15:15 | Melzer, Jurgen v Andujar, Pablo | 4-6,4-6 |
| Marbella, Spain | 2019/03/25 15:30 | Guttierrez-Ferrol, Sergio v Melzer, Jurgen | 3-6,3-6 |
| Austrian Pro Series Singles | 2020/05/28 07:00 | Jurij Rodionov v Hampel, Lenny | 7-6,0-6,6-4 |
| Austrian Pro Series Singles | 2020/05/27 09:00 | Hampel, Lenny v Andrejic, Marko | 6-2,6-1 |
| ITF - M15 Héraklion | 2020/03/12 10:20 | Hampel, Lenny v Geens, Clement | 2-6,6-0,4-6 |
| ITF - M15 Héraklion | 2020/03/11 13:15 | Pietro Marino v Hampel, Lenny | 3-6,7-5,3-6 |
| ITF - M15 Héraklion | 2020/03/05 08:30 | Hampel, Lenny v Antoine Cornut-Chauvinc | 4-6,3-6 |
| ITF - M15 Héraklion | 2020/03/04 08:30 | Schmitz, Constantin v Hampel, Lenny | 6-7,6-2,3-6 |
| ITF - M15 Héraklion | 2019/11/28 09:30 | Hampel, Lenny v Matija Pecotic | 6-3,4-6,2-6 |
| ITF - M15 Héraklion | 2019/11/27 14:30 | Ioannis Xilas v Hampel, Lenny | 4-6,1-6 |