Stadium: Grandstand Round: 27 Ground: Hardcourt outdoor
| ATP Washington MD | 2021/08/03 23:10 | Klaasen/Mclachlan v Bublik/Golubev | 7-5,6-2 |
| Wimbledon MD | 2021/07/07 10:00 | Bolelli/Gonzalez v Klaasen/Mclachlan | 7-6,6-4,6-3 |
| Wimbledon MD | 2021/07/05 10:00 | Klaasen/Mclachlan v Chardy/Martin | 6-7,6-4,6-7,7-6,7-5 |
| Wimbledon MD | 2021/07/03 14:15 | Klaasen/Mclachlan v Berankis/Koepfer | 2-6,6-3,6-4 |
| Wimbledon MD | 2021/07/01 12:35 | Klaasen/Mclachlan v Molteni/Vavassori | 6-7,6-4,6-4 |
| ATP Eastbourne MD | 2021/06/23 16:50 | Klaasen/Mclachlan v Cabal/Farah | 7-6,6-7,3-10 |
| ATP Halle MD | 2021/06/16 12:30 | Klaasen/Mclachlan v Molteni/Pella | 6-7,6-7 |
| ATP Stuttgart MD | 2021/06/10 12:30 | Klaasen/Mclachlan v Begemann/Brown | 4-6,6-3,8-10 |
| ATP Washington MD | 2021/08/03 21:30 | Querrey/Sock v Dimitrov/Paul | 6-7,2-6 |
| ATP Acapulco MD | 2021/03/18 04:10 | Dimitrov/Paul v Ram/Salisbury | 4-6,6-3,8-10 |