| date | Pair 1 | sets | Pair 2 | set 1 | set 2 | TB | dur (pts) | 
| Tue 23.10.18 | Oliver Marach / Mate Pavic |  AUT |  CRO | 1 | 2-0 | Lucas Miedler / Dennis Novak |  AUT |  AUT | WC | 6-3 | 6-4 |   | 1:01 (61-43) | 
| Thu 25.10.18 | Maximo Gonzalez / Diego Schwartzman |  ARG |  ARG |   | 2-1 | James Cerretani / Denis Kudla |  USA |  USA | LL | 7-5 | 3-6 | [10-6] | 1:24 (63-66) | 
| Tue 23.10.18 | Mike Bryan / Edouard Roger-Vasselin |  USA |  FRA |   | 2-1 | Juan Sebastian Cabal / Robert Farah |  COL |  COL | 3 | 5-7 | 6-4 | [10-4] | 1:25 (69-58) | 
| Mon 22.10.18 | Feliciano Lopez / Marc Lopez |  ESP |  ESP |   | 2-1 | Henri Kontinen / John Peers |  FIN |  AUS |   | 3-6 | 6-3 | [10-7] | 1:10 | 
| Wed 24.10.18 | Joe Salisbury / Neal Skupski |  GBR |  GBR |   | 2-1 | Marcus Daniell / Wesley Koolhof |  NZL |  NED |   | 3-6 | 7-63 | [10-4] | 1:35 (72-66) | 
| Mon 22.10.18 | Andreas Mies / Hans Podlipnik-Castillo |  GER |  CHI | LL | 2-0 | Jamie Murray / Bruno Soares |  GBR |  BRA | 4 | 6-4 | 6-2 |   | 1:07 (58-52) | 
| Wed 24.10.18 | Nikola Mektic / Rajeev Ram |  CRO |  USA |   | 2-0 | Roman Jebavy / Philipp Kohlschreiber |  CZE |  GER |   | 7-64 | 7-5 |   | 1:30 (80-73) | 
| Tue 23.10.18 | Lukasz Kubot / Marcelo Melo |  POL |  BRA | 2 | 2-1 | Denys Molchanov / Igor Zelenay |  UKR |  SVK | Q | 4-6 | 7-5 | [10-5] | 1:30 (69-69) |