Stadium: Court 7 Round: 27 Ground: Clay
| ITF - M25 Oldenzaal - HD | 2023/08/31 15:05 | Hartig/Sobbe v Meijer/Wagenaar | 7-6,6-1 |
| ITF M15 Eupen HD | 2023/08/12 13:30 | Bozemoj/Pel v Hartig/Sobbe | 6-3,6-3 |
| ITF M15 Eupen HD | 2023/08/11 12:00 | Hartig/Sobbe v Hammond/Hornung | 7-5,6-3 |
| ITF M15 Eupen HD | 2023/08/09 17:35 | Sannen/Stanke v Hartig/Sobbe | 6-7,4-6 |
| ITF M25 Marburg - HD | 2023/07/06 16:20 | Hartig/Sobbe v Gadamauri/Hermans | 1-6,1-6 |
| ITF M25 Marburg - HD | 2023/07/04 14:55 | Hartig/Sobbe v Matuszewski/Salazar | 6-3,6-1 |
| ITF - M25 Oldenzaal - HD | 2023/08/29 17:00 | Jans/Jans v Den Heijer/Pontjodikromo | 3-6,4-6 |
| ITF - M15 Antalya - HD | 2023/04/04 14:50 | Donders/Visker v Den Heijer/Pontjodikromo | 6-3,7-5 |
| ITF - M15 Antalya - HD | 2023/04/01 12:10 | Gimenez/Jose Ribeiro Lago v Den Heijer/Pontjodikromo | 3-6,6-3,7-10 |
| ITF - M15 Antalya - HD | 2023/03/31 12:55 | Donders/Visker v Den Heijer/Pontjodikromo | 6-7,3-6 |
| ITF - M15 Antalya - HD | 2023/03/30 13:00 | Alkaya/Ilkel v Den Heijer/Pontjodikromo | 2-6,4-6 |
| ITF - M15 Antalya - HD | 2023/03/28 11:10 | Den Heijer/Pontjodikromo v Heller/Kellovsky | 1-6,6-3,12-10 |
| ITF M15 Doha - HD | 2019/10/26 14:00 | Casey Alcantara/Bobrov v Den Heijer/Pontjodikromo | 6-7,6-4,6-10 |
| ITF M15 Doha - HD | 2019/10/25 15:00 | Goldsteiner/Guenther v Den Heijer/Pontjodikromo | 7-6,4-6,7-10 |