World: Davis Cup - World Group - Doubles - Main |
| | Ajdukovic D./Pavic M. | Koolhof W./Middelkoop M. | 2:1 (3:6, 6:4, 10:8) | dettagli | 17.09.2023 |
| | Dodig I./Pavic M. | Koolhof W./Middelkoop M. | CAN. | dettagli | 17.09.2023 |
| | Koolhof W./Middelkoop M. | Krajicek A./Ram R. | 1:2 (7:65, 63:7, 3:6) | dettagli | 14.09.2023 |
| | Koolhof W./Middelkoop M. | Heliovaara H./Niklas-Salminen P. | 2:1 (6:4, 65:7, 6:3) | dettagli | 12.09.2023 |
| | Koolhof W./Middelkoop M. | Heliovaara H./Ruusuvuori E. | CAN. | dettagli | 12.09.2023 |
World: Davis Cup - World Group I - Doubles - Main |
| | Carou I./Cuevas M. | Koolhof W./Middelkoop M. | 0:2 (2:6, 1:6) | dettagli | 19.09.2021 |
| | Behar A./Cuevas P. | Koolhof W./Middelkoop M. | CAN. | dettagli | 19.09.2021 |
Germany: Halle - Doubles - Main |
| 1/8-finals | Kubot L./Melo M. | Koolhof W./Middelkoop M. | 2:0 (6:3, 6:2) | dettagli | 19.06.2019 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/32-finals | Kubot L./Melo M. | Koolhof W./Middelkoop M. | 3:0 (6:4, 6:0, 6:3) | dettagli | 05.07.2017 |
Turkey: Antalya - Doubles - Main |
| 1/8-finals | Koolhof W./Middelkoop M. | Paes L./Shamasdin A. | 1:2 (6:3, 5:7, 9:11) | dettagli | 27.06.2017 |
Germany: Halle - Doubles - Qualification |
| Semi-finals | Haase R./Tomic B. | Koolhof W./Middelkoop M. | 2:0 (7:65, 7:5) | dettagli | 18.06.2017 |
Netherlands: Hertogenbosch - Doubles - Main |
| 1/8-finals | Koolhof W./Middelkoop M. | Martin F./Nestor D. | 1:2 (1:6, 7:610, 9:11) | dettagli | 13.06.2017 |
France: French Open - Doubles - Main |
| 1/32-finals | Koolhof W./Middelkoop M. | Jaziri M./Seppi A. | 1:2 (62:7, 7:65, 4:6) | dettagli | 31.05.2017 |
Switzerland: Geneva - Doubles - Main |
| 1/8-finals | Rojer J./Tecau H. | Koolhof W./Middelkoop M. | 2:0 (7:65, 7:63) | dettagli | 22.05.2017 |
France: Aix en Provence - Doubles - Main |
| Final | Begemann A./Chardy J. | Koolhof W./Middelkoop M. | 1:2 (6:2, 4:6, 14:16) | dettagli | 13.05.2017 |
| Semi-finals | Duran G./Molteni A. | Koolhof W./Middelkoop M. | 1:2 (6:4, 4:6, 5:10) | dettagli | 12.05.2017 |
| Quarter-finals | Knowle J./Melzer J. | Koolhof W./Middelkoop M. | WO. | dettagli | 11.05.2017 |
| 1/8-finals | Chazal M./Tessa L. | Koolhof W./Middelkoop M. | 0:2 (2:6, 1:6) | dettagli | 08.05.2017 |
Portugal: Estoril - Doubles - Main |
| 1/8-finals | Jaziri M./Muller G. | Koolhof W./Middelkoop M. | 2:1 (4:6, 6:3, 11:9) | dettagli | 02.05.2017 |
Hungary: Budapest - Doubles - Main |
| 1/8-finals | Cabal J. S./Farah R. | Koolhof W./Middelkoop M. | 2:0 (6:3, 6:3) | dettagli | 24.04.2017 |
Morocco: Marrakech - Doubles - Main |
| 1/8-finals | Koolhof W./Middelkoop M. | Chardy J./Martin F. | 1:2 (2:6, 7:62, 6:10) | dettagli | 11.04.2017 |
France: Sophia Antipolis - Doubles - Main |
| Semi-finals | Koolhof W./Middelkoop M. | Ignatik U./Kovalik J. | 1:2 (6:2, 5:7, 5:10) | dettagli | 08.04.2017 |
| Quarter-finals | Koolhof W./Middelkoop M. | Draganja M./Satschko A. | 2:0 (6:2, 7:5) | dettagli | 05.04.2017 |
| 1/8-finals | Koolhof W./Middelkoop M. | Skupski K./Skupski N. | 2:0 (6:1, 7:61) | dettagli | 03.04.2017 |
USA: Irving - Doubles - Main |
| 1/8-finals | Koolhof W./Middelkoop M. | Erlich J./Lipsky S. | 0:2 (2:6, 5:7) | dettagli | 15.03.2017 |
United Arab Emirates: Dubai - Doubles - Qualification |
| Semi-finals | Koolhof W./Middelkoop M. | Nedunchezhiyan J./Seppi A. | 1:2 (1:6, 6:4, 10:12) | dettagli | 26.02.2017 |
France: Marseille - Doubles - Main |
| Quarter-finals | Koolhof W./Middelkoop M. | Chardy J./Eysseric J. | 0:2 (66:7, 4:6) | dettagli | 23.02.2017 |
| 1/8-finals | Koolhof W./Middelkoop M. | Brunstrom J./Siljestrom A. | 2:0 (6:3, 7:63) | dettagli | 22.02.2017 |
Netherlands: Rotterdam - Doubles - Main |
| Final | Dodig I./Granollers M. | Koolhof W./Middelkoop M. | 2:0 (7:65, 6:3) | dettagli | 19.02.2017 |
| Semi-finals | Koolhof W./Middelkoop M. | Rojer J./Tecau H. | 2:0 (6:4, 6:3) | dettagli | 18.02.2017 |
| Quarter-finals | Koolhof W./Middelkoop M. | Kubot L./Melo M. | 2:0 (7:62, 6:3) | dettagli | 17.02.2017 |
| 1/8-finals | Zverev A./Zverev M. | Koolhof W./Middelkoop M. | 0:2 (3:6, 4:6) | dettagli | 14.02.2017 |
Bulgaria: Sofia - Doubles - Main |
| 1/8-finals | Skupski K./Skupski N. | Koolhof W./Middelkoop M. | 2:1 (63:7, 6:4, 10:7) | dettagli | 07.02.2017 |
Australia: Australian Open - Doubles - Main |
| 1/16-finals | Rojer J./Tecau H. | Koolhof W./Middelkoop M. | 2:0 (6:3, 6:4) | dettagli | 20.01.2017 |
| 1/32-finals | Koolhof W./Middelkoop M. | Peralta J./Zeballos H. | 2:0 (6:4, 6:2) | dettagli | 18.01.2017 |
Australia: Sydney - Doubles - Main |
| Final | Murray J./Soares B. | Koolhof W./Middelkoop M. | 0:2 (3:6, 5:7) | dettagli | 14.01.2017 |
| Semi-finals | Koolhof W./Middelkoop M. | Pavic M./Peya A. | 2:1 (6:3, 3:6, 10:8) | dettagli | 13.01.2017 |
| Quarter-finals | Koolhof W./Middelkoop M. | Rojer J./Tecau H. | 2:1 (7:64, 2:6, 11:9) | dettagli | 12.01.2017 |
| 1/8-finals | Marach O./Martin F. | Koolhof W./Middelkoop M. | 0:0 RET. (2:4) | dettagli | 11.01.2017 |
India: Chennai - Doubles - Main |
| 1/8-finals | Koolhof W./Middelkoop M. | Duran G./Molteni A. | 0:2 (64:7, 4:6) | dettagli | 02.01.2017 |
Italy: Andria - Doubles - Main |
| Final | Koolhof W./Middelkoop M. | Jebavy R./Kolar Z. | 2:0 (6:3, 6:3) | dettagli | 26.11.2016 |
| Semi-finals | Koolhof W./Middelkoop M. | Jankovits Y./Margaroli L. | 2:0 (7:5, 6:2) | dettagli | 25.11.2016 |