Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ATP - Rotterdam - HD | 2021/03/03 13:30 | Chardy/Martin v Koolhof/Kubot | 6-4,6-3 |
| ATP - Rotterdam - HD | 2021/03/02 10:00 | Mclachlan/Nishikori v Koolhof/Kubot | 5-7,6-3,6-10 |
| Australian Open - HD | 2021/02/15 06:55 | Ebden/Smith v Koolhof/Kubot | 7-6,6-4 |
| Australian Open - HD | 2021/02/14 05:15 | Kokkinakis/Kyrgios v Koolhof/Kubot | 3-6,4-6 |
| Australian Open - HD | 2021/02/11 00:00 | Behar/Escobar v Koolhof/Kubot | 3-6,4-6 |
| ATP Murray River Open - HD | 2021/02/06 06:45 | Chardy/Martin v Koolhof/Kubot | 7-6,6-3 |
| ATP Murray River Open - HD | 2021/02/05 08:30 | Albot/Gerasimov v Koolhof/Kubot | 2-6,6-3,7-10 |
| ATP - Doha - HD | 2021/03/10 17:20 | Karatsev/Rublev v Melo/Rojer | 6-2,6-3 |
| ATP - Doha - HD | 2021/03/09 14:00 | Krawietz/Opelka v Melo/Rojer | 1-6,6-7 |
| ATP - Rotterdam - HD | 2021/03/02 18:40 | Melo/Rojer v Krawietz/Tecau | 3-6,6-3,9-11 |