Round: 44 Ground: Clay
| ITF - M15 Valldoreix | 2020/11/09 09:00 | Alexander Weis v Xavi Matas Ortega | 6-1,6-3 |
| ITF - M15 Valldoreix | 2020/11/08 11:30 | Alexander Weis v Albert Roglan | 6-2,6-3 |
| ITF - M15 Caslano | 2020/08/31 15:25 | Alexander Weis v Alec Deckers | 6-7,4-6 |
| ITF - M15 Alkmaar | 2020/08/25 15:15 | Jacopo Berrettini v Alexander Weis | 7-6,4-6,6-1 |
| ITF - M25 Vogau | 2020/08/17 11:30 | Timofey Skatov v Alexander Weis | 7-6,6-3 |
| ITF - M25 Vogau | 2020/08/17 09:00 | Vladimir Filip v Alexander Weis | 2-6,4-6 |
| ITF - M25 Vogau | 2020/08/16 09:30 | Hans Peter Kaufmann v Alexander Weis | 4-6,1-6 |
| ITF - M25 Murcia | 2020/03/05 09:55 | Eduard Esteve Lobato v Alexander Weis | 6-1,6-4 |
| ITF - M15 Valldoreix | 2020/11/09 09:00 | Kuzey Cekirge v Nikolay Nedelchev | 5-7,7-5,2-10 |
| ITF - M15 Valldoreix | 2020/11/08 10:00 | Nikolay Nedelchev v Carlos Sanchez Jover | 6-4,0-6,10-5 |