Stadium: Court 3 Round: 26 Ground: Clay
| ATP Madrid MD | 2018/05/11 14:50 | Mektic/Peya v Klaasen/Venus | 6-7,6-3,10-8 |
| French Open MD | 2018/05/31 13:10 | Klaasen/Venus v Eysseric/Nys | 7-6,6-3 |
| French Open MD | 2018/05/29 09:00 | Klaasen/Venus v Denolly/Muller | 6-3,6-3 |
| ATP Rome MD | 2018/05/16 15:30 | Klaasen/Venus v Murray/Soares | 3-6,4-6 |
| ATP Rome MD | 2018/05/14 10:45 | Harrison/Verdasco v Klaasen/Venus | 2-6,4-6 |
| 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 |
| French Open MD | 2018/06/01 09:00 | Basilashvili/Millman v Mektic/Peya | 4-6,2-6 |
| French Open MD | 2018/05/29 09:00 | Inglot/Skugor v Mektic/Peya | 4-6,3-6 |
| ATP Rome MD | 2018/05/16 13:45 | Mektic/Peya v Isner/Sock | 6-7,4-6 |
| ATP Madrid MD | 2018/05/12 14:00 | Cabal/Farah v Mektic/Peya | 3-6,6-3,3-10 |
| 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 10:00 | Kontinen/Peers v Mektic/Peya | 4-6,4-6 |
| ATP Madrid MD | 2018/05/08 11:55 | Anderson/Mirnyi v Mektic/Peya | 4-6,6-3,4-10 |
| ATP Munich MD | 2018/05/06 09:30 | Mektic/Peya v Dodig/Ram | 3-6,5-7 |