Stadium: KNLTB Court Round: 26 Ground: Clay
| Challenger Braunschweig MD | 2021/07/08 10:00 | Hidalgo/Gornes v Sijsling/Smits | 6-4,3-6,8-10 |
| Challenger Braunschweig MD | 2021/07/07 09:30 | Kolar/Olivetti v Hidalgo/Gornes | 7-5,6-7,8-10 |
| ITF M25 The Hague MD | 2021/07/03 12:55 | de Jong/Stevens v Brouwer/Sels | 6-3,6-4 |
| ITF M25 The Hague MD | 2021/07/02 17:45 | Brouwer/Sels v Eisinga/Wassermann | 6-2,6-3 |
| ITF M25 The Hague MD | 2021/06/29 13:10 | Ritschard/Tepavac v Brouwer/Sels | 3-6,1-6 |
| ITF M25 Alkmaar MD | 2021/06/26 17:00 | De Jong/Jong v Brouwer/Sels | 6-0,4-6,10-6 |
| ITF M25 Alkmaar MD | 2021/06/25 15:55 | Freund/Virtanen v Brouwer/Sels | 6-4,4-6,4-10 |
| ITF M25 Alkmaar MD | 2021/06/24 17:00 | Tepavac/Uchida v Brouwer/Sels | 1-6,4-6 |
| ITF M25 Alkmaar MD | 2021/06/23 16:40 | Barranco Cosano/Dhoe v Brouwer/Sels | 4-6,3-6 |
| ITF M25 Vic MD | 2021/05/18 15:05 | Brouwer/Sels v Alves/Gutierrez | 1-6,6-7 |