Stadium: Grand Stand Round: 26 Ground: Clay
| ATP Geneva - MD | 2021/05/21 11:40 | Bolelli/Gonzalez v Klaasen/Mclachlan | 3-6,6-3,10-4 |
| ATP Geneva - MD | 2021/05/20 11:50 | Klaasen/Mclachlan v Čilić/Golubev | 6-3,7-6 |
| ATP Geneva - MD | 2021/05/18 14:10 | Klaasen/Mclachlan v Bambridge/Inglot | 6-3,7-6 |
| ATP Rzym - MD | 2021/05/13 15:40 | Klaasen/Mclachlan v Ram/Salisbury | 3-6,2-6 |
| ATP Rzym - MD | 2021/05/12 15:15 | Gonzalez/Martin v Klaasen/Mclachlan | 7-6,4-6,6-10 |
| ATP Madryt - MD | 2021/05/06 14:35 | Klaasen/Mclachlan v Herbert/Mahut | 6-7,6-7 |
| ATP Madryt - MD | 2021/05/05 14:25 | Klaasen/Mclachlan v Fritz/Marach | 6-2,6-3 |
| ATP Estoril - MD | 2021/04/30 11:00 | Nys/Puetz v Klaasen/Mclachlan | 3-6,6-4,14-12 |