Stadium: Stadium 6 Round: 25 Ground: Hardcourt outdoor
| US Open MD | 2021/09/04 15:00 | Klaasen/Mclachlan v Gonzalez/Molteni | 1-6,6-3,6-7 |
| US Open MD | 2021/09/03 00:15 | Klaasen/Mclachlan v Krueger/Mmoh | 6-4,6-7,7-6 |
| ATP Winston-Salem MD | 2021/08/24 01:20 | Klaasen/Mclachlan v Daniell/Demoliner | 3-6,6-4,4-10 |
| ATP Cincinnati MD | 2021/08/16 17:30 | Behar/Escobar v Klaasen/Mclachlan | 4-6,6-3,10-8 |
| ATP Toronto MD | 2021/08/11 19:40 | Klaasen/Mclachlan v Koolhof/Krajicek | 4-6,6-7 |
| ATP Washington MD | 2021/08/08 18:00 | Klaasen/Mclachlan v Skupski/Venus | 7-6,6-4 |
| ATP Washington MD | 2021/08/07 19:00 | Daniell/Melo v Klaasen/Mclachlan | 4-6,5-7 |
| ATP Washington MD | 2021/08/03 23:10 | Klaasen/Mclachlan v Bublik/Golubev | 7-5,6-2 |
| US Open MD | 2021/09/03 16:15 | Johnson/Querrey v Arevalo/Middelkoop | 6-7,6-4,7-6 |
| ATP Winston-Salem MD | 2021/08/27 20:00 | Dodig/Krajicek v Arevalo/Middelkoop | 7-6,5-7,6-10 |
| ATP Winston-Salem MD | 2021/08/26 19:00 | Arevalo/Middelkoop v Marach/Oswald | 6-3,6-3 |
| ATP Winston-Salem MD | 2021/08/25 19:00 | Arevalo/Middelkoop v Saville/Smith | 3-6,7-6,10-7 |
| ATP Winston-Salem MD | 2021/08/24 18:00 | Golubev/Mies v Arevalo/Middelkoop | 2-6,7-5,9-11 |
| ATP Washington MD | 2021/08/04 23:40 | Arevalo/Middelkoop v Daniell/Melo | 6-7,2-6 |
| French Open MD | 2021/06/04 13:15 | Arevalo/Middelkoop v De Minaur/Reid | 7-6,6-4 |
| French Open MD | 2021/06/01 09:00 | Kontinen/Roger-Vasselin v Arevalo/Middelkoop | 7-6,6-7,6-7 |