| date | Pair 1 | sets | Pair 2 | set 1 | set 2 | set 3 | 
| --- 02.02.19 | Maximo Gonzalez / Horacio Zeballos |  ARG |  ARG | 1 | 2-0 | Nicholas Monroe / Miguel Angel Reyes-Varela |  USA |  MEX |  | 7-68 | 6-4 |  | 
| --- 02.02.19 | G Andreozzi / Guido Pella |  ARG |  ARG |  | 2-0 | G Granollers / Joao Sousa |  ESP |  POR |  | 6-4 | 6-3 |  | 
| --- 02.02.19 | Roman Jebavy / Andres Molteni |  CZE |  ARG | 4 | 2-0 | Taro Daniel / Maximilian Marterer |  JPN |  GER |  | 6-4 | 6-2 |  | 
| --- 02.02.19 | Marco Cecchinato / Dusan Lajovic |  ITA |  SRB |  | 2-1 | Federico Delbonis / Guilermo Duran |  ARG |  ARG | WC | 4-6 | 6-3 | [10-8] | 
| --- 02.02.19 | Jaume Munar Clar / Albert Ramos-Vinolas |  ESP |  ESP |  | 2-1 | Aljaz Bedene / David Marrero |  SLO |  ESP |  | 7-62 | 3-6 | [11-9] | 
| --- 02.02.19 | Marcelo Demoliner / F Nielsen |  BRA |  DEN | 3 | 2-1 | Marcelo Arevalo / James Cerretani |  ESA |  USA |  | 6-3 | 3-6 | [10-5] | 
| --- 02.02.19 | Roberto Carballes Baena / Malek Jaziri |  ESP |  TUN |  | 2-0 | S Gille / J Vliegen |  BEL |  BEL | WC | 6-3 | 7-64 |  | 
| --- 02.02.19 | Diego Schwartzman / Dominic Thiem |  ARG |  AUT |  | 2-0 | Pablo Cuevas / Marc Lopez |  URU |  ESP | 2 | 6-3 | 7-5 |  |