 Netherlands: M25 Alkmaar - Doubles - Main |
|---|
| 1/8-finals | Nijboer R./Visker N. | Hassan B./Wehnelt K. | 0:2 (3:6, 64:7) | details | 22.06.2021 |
 North Macedonia: M15 Skopje - Doubles - Main |
|---|
| 1/8-finals | Ionel N. D./Yamanaka T. | Nijboer R./Visker N. | 2:1 (1:6, 6:3, 12:10) | details | 01.06.2021 |
 Egypt: M15 Sharm El Sheikh 7 - Doubles - Main |
|---|
| Semi-finals | Nijboer R./Visker N. | Berrettini J./Oberleitner N. | 0:2 (4:6, 2:6) | details | 19.03.2021 |
| Quarter-finals | Hsu Y. H./Shimizu Y. | Nijboer R./Visker N. | 1:2 (66:7, 6:4, 5:10) | details | 18.03.2021 |
| 1/8-finals | Khotkov O./Ochi M. | Nijboer R./Visker N. | 0:2 (3:6, 4:6) | details | 16.03.2021 |
| Egypt: M15 Sharm El Sheikh 6 - Doubles - Main |
|---|
| Quarter-finals | Hsu Y. H./Shimizu Y. | Nijboer R./Visker N. | 2:0 (7:5, 6:2) | details | 11.03.2021 |
| 1/8-finals | Nijboer R./Visker N. | Li H./Podzus M. | 2:0 (6:4, 6:3) | details | 09.03.2021 |
