Stadium: Court 8 Round: 26 Ground: Hardcourt outdoor
| ATP Cincinnati MD | 2019/08/12 21:25 | Klaasen R / Venus M v Djere L / Lajovic D | 6-3,6-1 |
| ATP Washington MD | 2019/08/04 16:00 | Rojer J-J / Tecau H v Klaasen R / Venus M | 6-3,3-6,2-10 |
| ATP Washington MD | 2019/08/03 18:30 | Klaasen R / Venus M v Kubot L / Melo M | 6-2,7-6 |
| ATP Washington MD | 2019/08/02 21:25 | Murray A / Murray J v Klaasen R / Venus M | 7-6,6-7,7-10 |
| ATP Washington MD | 2019/07/31 22:20 | Krawietz K / Mies A v Klaasen R / Venus M | 3-6,6-3,7-10 |
| Wimbledon MD | 2019/07/11 15:10 | Klaasen R / Venus M v Cabal / Farah | 4-6,7-6,6-7,4-6 |
| Wimbledon MD | 2019/07/10 11:30 | Kontinen H / Peers J v Klaasen R / Venus M | 6-4,3-6,7-6,4-6,3-6 |
| Wimbledon MD | 2019/07/08 11:50 | Haase R / Nielsen F v Klaasen R / Venus M | 2-6,3-6,6-7 |
| ATP Cincinnati MD | 2019/08/13 20:15 | Krajicek A / Roger-Vasselin E v Pella G / Sousa J | 6-0,6-7,11-9 |