Stadium: Court 3 Round: 25 Ground: Grass
| ATP Belgrade MD | 2021/05/26 11:00 | Bambridge/Inglot v Demoliner/Gonzalez | 6-4,6-4 |
| ATP Belgrade MD | 2021/05/25 11:45 | Medjedovic/Tepavac v Demoliner/Gonzalez | 6-7,6-3,9-11 |
| ATP Lyon MD | 2021/05/22 09:45 | Herbert/Mahut v Demoliner/Gonzalez | 7-5,7-6 |
| ATP Lyon MD | 2021/05/20 10:00 | Nedovyesov/Vavassori v Demoliner/Gonzalez | 6-7,4-6 |
| ATP Lyon MD | 2021/05/19 12:50 | Demoliner/Gonzalez v Barrere/Olivetti | 4-6,6-2,10-6 |
| ATP Estoril MD | 2021/04/28 12:20 | Nys/Puetz v Demoliner/Gonzalez | 7-6,6-1 |
| ATP Estoril MD | 2021/04/27 14:20 | Demoliner/Gonzalez v Arevalo/Middelkoop | 6-2,3-6,10-5 |
| ATP Belgrade MD | 2021/04/21 11:00 | Millman/Smith v Demoliner/Gonzalez | 6-4,6-3 |
| ATP Munich MD | 2021/04/28 10:00 | Daniell/Oswald v Hanfmann/Koepfer | 6-7,4-6 |
| ATP Munich MD | 2021/04/26 11:25 | Hanfmann/Koepfer v Molchanov/Skugor | 6-7,7-5,10-5 |