Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ATP Acapulco MD | 2018/03/02 01:50 | Mektic/Peya v Marach/Pavic | 7-5,7-5 |
| ATP Toronto MD | 2018/08/11 16:30 | Marach/Pavic v Klaasen/Venus | 6-4,6-7,3-10 |
| ATP Toronto MD | 2018/08/10 16:30 | Marach/Pavic v Rojer/Tecau | 6-7,7-5,10-6 |
| ATP Washington MD | 2018/08/03 02:20 | Marach/Pavic v Zverev/Zverev | 1-6,4-6 |
| ATP Hamburg MD | 2018/07/29 10:50 | Marach/Pavic v Peralta/Zeballos | 1-6,6-4,6-10 |
| ATP Hamburg MD | 2018/07/27 11:15 | Marach/Pavic v Daniell/Koolhof | 2-6,6-4,10-7 |
| ATP Hamburg MD | 2018/07/26 14:30 | Marach/Pavic v Paire/Roger-Vasselin | 4-6,7-6,10-7 |
| ATP Hamburg MD | 2018/07/24 11:50 | Marach/Pavic v Mayer/Schwartzman | 6-3,6-4 |
| Wimbledon MD | 2018/07/06 13:30 | Marach/Pavic v Delbonis/Reyes-Varela | 6-4,7-6,4-6,5-7,2-6 |
| ATP Cincinnati MD | 2018/08/14 23:35 | Carreno-Busta/Sousa v Mektic/Peya | 3-6,7-5,9-11 |
| ATP Toronto MD | 2018/08/11 22:15 | Mektic/Peya v Kontinen/Peers | 6-7,6-4,10-12 |
| ATP Toronto MD | 2018/08/10 20:05 | Mektic/Peya v Anderson/Djokovic | 7-5,7-5 |
| ATP Toronto MD | 2018/08/09 15:00 | Murray/Soares v Mektic/Peya | 4-6,4-6 |
| ATP Toronto MD | 2018/08/07 19:30 | Mektic/Peya v Dodig/Kyrgios | 6-2,6-2 |
| ATP Washington MD | 2018/08/01 17:45 | Bryan/Roger-Vasselin v Mektic/Peya | 6-7,7-6,10-5 |
| ATP Hamburg MD | 2018/07/23 12:30 | Mektic/Peya v Marrero/Qureshi | 4-6,5-7 |
| Wimbledon MD | 2018/07/09 13:10 | Mektic/Peya v Haase/Lindstedt | 5-7,3-6,6-3,6-4,6-8 |