Stadium: Court 14 Round: 26 Ground: Hardcourt outdoor
| ATP New York MD | 2020/08/22 18:45 | Koolhof/Mektic v Khachanov/Rublev | 6-4,6-2 |
| ATP Dubai MD | 2020/02/27 11:00 | Koolhof/Mektic v Klaasen/Marach | 5-7,4-6 |
| ATP Dubai MD | 2020/02/25 14:35 | Al Janahi/Al Janahi v Koolhof/Mektic | 0-6,1-6 |
| ATP Marseille MD | 2020/02/23 10:45 | Mahut/Pospisil v Koolhof/Mektic | 6-3,6-4 |
| ATP Marseille MD | 2020/02/21 12:00 | Nielsen/Puetz v Koolhof/Mektic | 4-6,2-6 |
| ATP Marseille MD | 2020/02/19 12:35 | Erlich/Vasilevski v Koolhof/Mektic | 3-6,5-7 |
| ATP Marseille MD | 2020/02/17 15:50 | Brkic/Cilic v Koolhof/Mektic | 5-7,6-1,10-12 |
| ATP Rotterdam MD | 2020/02/10 10:00 | Auger Aliassime/Hurkacz v Koolhof/Mektic | 6-3,7-6 |
| ATP New York MD | 2020/08/22 15:00 | Peers/Venus v Evans/Goffin | 4-6,6-7 |