Stadium: Court 10 Round: 27 Ground: Hardcourt outdoor
| ATP New York MD | 2020/08/24 18:40 | Koolhof/Nikola Mektic v Evans/Goffin | 7-5,6-1 |
| ATP New York MD | 2020/08/22 18:45 | Koolhof/Nikola Mektic v Khachanov/Rublev | 6-4,6-2 |
| ATP - Dubaï - Doubles Hommes | 2020/02/27 11:00 | Koolhof/Nikola Mektic v Klaasen R / Marach O | 5-7,4-6 |
| ATP - Dubaï - Doubles Hommes | 2020/02/25 14:35 | AL Janahi A / AL Janahi F v Koolhof/Nikola Mektic | 0-6,1-6 |
| ATP - Marseille - Doubles Hommes | 2020/02/23 10:45 | Mahut N / Pospisil V v Koolhof/Nikola Mektic | 6-3,6-4 |
| ATP - Marseille - Doubles Hommes | 2020/02/21 12:00 | Nielsen F / Puetz T v Koolhof/Nikola Mektic | 4-6,2-6 |
| ATP - Marseille - Doubles Hommes | 2020/02/19 12:35 | Erlich J / Vasilevski A v Koolhof/Nikola Mektic | 3-6,5-7 |
| ATP - Marseille - Doubles Hommes | 2020/02/17 15:50 | Brkic T / Cilic M v Koolhof/Nikola Mektic | 5-7,6-1,10-12 |
| ATP New York MD | 2020/08/24 22:00 | Hurkacz H / Isner J v Carreno-Busta/De Minaur | 6-7,5-7 |
| ATP New York MD | 2020/08/23 15:00 | Carreno-Busta/De Minaur v Dodig I / Polasek F | 3-6,7-6,10-5 |