Stadium: Center Court Round: 3
| Coupe Davis | 2023/02/05 12:00 | Koolhof W / Middelkoop M v Klein L / Molcan A | 6-3,6-3 |
| Coupe Davis | 2022/09/17 17:00 | Ram/Sock v Koolhof W / Middelkoop M | 4-6,7-6,6-4 |
| Coupe Davis | 2022/09/16 17:00 | Murray J / Salisbury J v Koolhof W / Middelkoop M | 6-7,7-6,3-6 |
| Coupe Davis | 2022/09/13 20:40 | Bublik/Nedovyesov v Koolhof W / Middelkoop M | 6-4,1-6,6-3 |
| Groupe mondial I | 2022/03/05 12:00 | Koolhof W / Middelkoop M v Polansky P / Schnur B | 7-5,6-3 |
| Coupe Davis | 2021/09/19 12:55 | Carou/Cuevas v Koolhof W / Middelkoop M | 2-6,1-6 |
| ATP Halle MD | 2019/06/19 11:55 | Kubot L / Melo M v Koolhof W / Middelkoop M | 6-3,6-2 |
| Wimbledon MD | 2017/07/05 16:20 | Kubot L / Melo M v Koolhof W / Middelkoop M | 6-4,6-0,6-3 |
| Challenger Ortisei MD | 2020/11/17 11:15 | Heliovaara H / Niklas-Salminen P v Glasspool L / Lawson A | 7-5,6-7,8-10 |
| Challenger Calgary MD | 2020/02/28 22:30 | Broady L / Clayton S v Heliovaara H / Niklas-Salminen P | 1-6,7-6,13-11 |
| Challenger Calgary MD | 2020/02/28 03:20 | Cerretani J / Lovett K v Heliovaara H / Niklas-Salminen P | 5-7,3-6 |
| Challenger Drummondville MD | 2020/02/19 22:55 | Johnson A / Johnson R v Heliovaara H / Niklas-Salminen P | 6-7,6-4,10-8 |
| Challenger Helsinki MD | 2019/11/16 10:00 | Nielsen F / Puetz T v Heliovaara H / Niklas-Salminen P | 3-6,7-6,10-8 |
| Challenger Helsinki MD | 2019/11/14 16:25 | Heliovaara H / Niklas-Salminen P v Escoffier A / Petit G | 7-6,6-1 |
| Challenger Helsinki MD | 2019/11/13 17:30 | Drzewiecki/Walkow v Heliovaara H / Niklas-Salminen P | 4-6,3-6 |
| Playford City II, Australie, Doubles | 2019/11/03 00:30 | Gonzales R / King E v Heliovaara H / Niklas-Salminen P | 4-6,7-6,7-10 |