Stadium: Court 2 Round: 26 Ground: Clay
| ATP Rome - Herrdubbel | 2021/05/13 15:40 | Klaasen/Mclachlan v Ram/Salisbury | 3-6,2-6 |
| ATP Rome - Herrdubbel | 2021/05/12 15:15 | Gonzalez/Martin v Klaasen/Mclachlan | 7-6,4-6,6-10 |
| ATP Madrid - Herrdubbel | 2021/05/06 14:35 | Klaasen/Mclachlan v Herbert/Mahut | 6-7,6-7 |
| ATP Madrid - Herrdubbel | 2021/05/05 14:25 | Klaasen/Mclachlan v Fritz/Marach | 6-2,6-3 |
| ATP Estoril - Herrdubbel | 2021/04/30 11:00 | Nys/Puetz v Klaasen/Mclachlan | 3-6,6-4,14-12 |
| ATP Estoril - Herrdubbel | 2021/04/29 10:30 | Monroe/Tiafoe v Klaasen/Mclachlan | 3-6,7-6,6-10 |
| ATP Estoril - Herrdubbel | 2021/04/28 11:00 | Bolelli/Gonzalez v Klaasen/Mclachlan | 2-6,3-6 |
| ATP Belgrad - Herrdubbel | 2021/04/20 15:25 | Sabanov/Sabanov v Klaasen/Mclachlan | 6-4,6-2 |
| ATP Estoril - Herrdubbel | 2021/05/02 12:00 | Bambridge/Inglot v Nys/Puetz | 5-7,6-3,3-10 |
| ATP Estoril - Herrdubbel | 2021/05/01 11:00 | Behar/Escobar v Bambridge/Inglot | 3-6,4-6 |
| ATP Estoril - Herrdubbel | 2021/04/28 11:00 | Krajicek/Marach v Bambridge/Inglot | 6-7,4-6 |
| ATP Estoril - Herrdubbel | 2021/04/26 11:50 | Bambridge/Inglot v Bopanna/Bublik | 6-2,7-6 |
| ATP Belgrad - Herrdubbel | 2021/04/22 12:00 | Berrettini/Vavassori v Bambridge/Inglot | 6-4,7-6 |
| ATP Belgrad - Herrdubbel | 2021/04/19 13:05 | Bambridge/Inglot v Krajicek/Marach | 6-7,7-6,10-7 |
| Challenger Belgrad - Herrdubbel | 2021/04/14 16:55 | Bagnis/Cerundolo v Bambridge/Inglot | 4-6,7-6,11-9 |
| ATP Marseille - Herrdubbel | 2021/03/11 10:30 | Lammons/Withrow v Bambridge/Inglot | 7-6,7-6 |