Stadium: Court 1 Round: 26 Ground: Hardcourt indoor
| ATP Cincinnati MD | 2018/08/15 15:00 | Mclachlan/Middelkoop v Cabal/Farah | 5-7,3-6 |
| ATP Cincinnati MD | 2018/08/13 17:10 | Cecchinato/Dzumhur v Mclachlan/Middelkoop | 7-6,3-6,8-10 |
| ATP Toronto MD | 2018/08/09 19:00 | Mclachlan/Middelkoop v Rojer/Tecau | 3-6,6-3,5-10 |
| ATP Toronto MD | 2018/08/09 02:55 | Mclachlan/Middelkoop v Coric/Haase | 5-7,6-3,10-7 |