Stadium: Court 3 Round: 25 Ground: Clay
| ATP Madrid MD | 2018/05/11 14:50 | Mektic/Peya v Klaasen/Venus | 6-7,6-3,10-8 |
| ATP Madrid MD | 2018/05/10 11:25 | Klaasen/Venus v Bopanna/Roger-Vasselin | 4-6,7-6,10-5 |
| ATP Madrid MD | 2018/05/08 19:45 | Klaasen/Venus v Lopez/Lopez | 3-6,7-5,10-8 |
| ATP Estoril MD | 2018/05/01 11:00 | De Minaur/Hewitt v Klaasen/Venus | 6-4,6-4 |
| ATP Monte Carlo MD | 2018/04/20 09:00 | Bolelli/Fognini v Klaasen/Venus | 7-6,6-3 |
| ATP Monte Carlo MD | 2018/04/15 12:00 | Pouille/Rublev v Klaasen/Venus | 1-6,1-6 |
| ATP Miami MD | 2018/03/28 21:00 | Klaasen/Venus v Bryan/Bryan | 6-3,6-7,8-10 |
| ATP Miami MD | 2018/03/26 17:15 | Klaasen/Venus v Isner/Young | 7-5,6-3 |