Stadium: Court 2 Round: 26 Ground: Hardcourt indoor
| Challenger - Cherbourg - Doubles Hommes | 2021/02/11 14:45 | Sijsling / Smits v Klein L / Molcan A | 6-7,6-7 |
| Challenger - Cherbourg - Doubles Hommes | 2021/02/09 14:45 | Drzewiecki/Jebavy v Sijsling / Smits | 6-1,6-7,7-10 |
| ITF - M15 Bressuire - Doubles Hommes | 2021/01/19 14:55 | de Schepper/Napolitano v Sijsling / Smits | 7-6,6-7,10-5 |
| ITF - M15 Antalya - Doubles Hommes | 2021/01/09 11:45 | Sijsling / Smits v Harris/Sabanin | 6-0,3-6,13-15 |
| ITF - M15 Antalya - Doubles Hommes | 2021/01/09 08:35 | Sijsling / Smits v Deschamps/Savelev | 6-2,7-5 |
| ITF M25 Rodez MD | 2020/10/16 14:30 | Doumbia/Reboul v Sijsling / Smits | 6-3,7-5 |
| ITF M25 Rodez MD | 2020/10/15 16:40 | Arribage T / Broville M v Sijsling / Smits | 6-7,6-7 |
| ITF M25 Rodez MD | 2020/10/14 10:00 | Sijsling / Smits v Added/Eysseric | 6-4,6-2 |