Stadium: Court 1 Round: 28 Ground: Hardcourt indoor
| Challenger Orlando MD | 2021/04/15 15:35 | De Jong/Verbeek v Aragone/Martinez | 6-3,4-6,8-10 |
| Challenger Orlando MD | 2021/04/14 14:00 | Pasha/Schnur v De Jong/Verbeek | 4-6,2-6 |
| Challenger St. Petersburg MD | 2021/03/13 08:00 | Kravchuk/Yevseyev v De Jong/Verbeek | 1-6,6-3,5-10 |
| Challenger St. Petersburg MD | 2021/03/12 09:35 | De Jong/Verbeek v Karlovskiy/Serdarusic | 6-2,7-6 |
| Challenger St. Petersburg MD | 2021/03/11 13:05 | Kopriva/Vrbensky v De Jong/Verbeek | 0-6,3-6 |
| Challenger St. Petersburg MD | 2021/03/10 14:30 | Golubev/Tiurnev v De Jong/Verbeek | 4-6,6-7 |
| Challenger St. Petersburg MD | 2021/03/06 13:45 | De Jong/Verbeek v Eubanks/Quiroz | 4-6,3-6 |
| Challenger St. Petersburg MD | 2021/03/05 13:45 | De Jong/Verbeek v Bega/Mansouri | 6-2,6-3 |