Belgium: Antwerp - Doubles - Main |
| 1/8-finals | Gille S./Vliegen J. | Arevalo M./O'Mara J. | 2:0 (6:4, 6:3) | details | 21.10.2020 |
| 1/8-finals | Cabal J. S./Farah R. | Arevalo M./O'Mara J. | CAN. | details | 20.10.2020 |
Italy: Sardinia - Doubles - Main |
| Quarter-finals | Arevalo M./O'Mara J. | Peers J./Venus M. | 0:2 (1:6, 2:6) | details | 14.10.2020 |
| 1/8-finals | Golubev A./Nedovyesov A. | Arevalo M./O'Mara J. | 1:2 (6:4, 5:7, 4:10) | details | 13.10.2020 |
France: French Open - Doubles - Main |
| 1/16-finals | Rojer J./Tecau H. | Arevalo M./O'Mara J. | 2:0 (6:3, 6:2) | details | 02.10.2020 |
| 1/32-finals | Arevalo M./O'Mara J. | Mager G./Ramos A. | 2:0 (6:1, 6:2) | details | 30.09.2020 |
Italy: Forli - Doubles - Main |
| 1/8-finals | Arevalo M./O'Mara J. | Golubev A./Vavassori A. | 0:2 (1:6, 2:6) | details | 23.09.2020 |
USA: US Open - Doubles - Main |
| 1/16-finals | Arevalo M./O'Mara J. | Rojer J./Tecau H. | 1:2 (7:63, 2:6, 4:6) | details | 03.09.2020 |
Chile: Santiago - Doubles - Main |
| Final | Carballes Baena R./Davidovich Fokina A. | Arevalo M./O'Mara J. | 2:0 (7:63, 6:1) | details | 29.02.2020 |
| Semi-finals | Bagnis F./Cuevas P. | Arevalo M./O'Mara J. | 0:2 (65:7, 4:6) | details | 28.02.2020 |
| Quarter-finals | Coria F./Londero J. I. | Arevalo M./O'Mara J. | 0:2 (63:7, 3:6) | details | 27.02.2020 |
| 1/8-finals | Jebavy R./Zelenay I. | Arevalo M./O'Mara J. | 1:2 (4:6, 6:4, 6:10) | details | 26.02.2020 |
USA: Delray Beach - Doubles - Main |
| Semi-finals | Bryan B./Bryan M. | Arevalo M./O'Mara J. | 2:1 (65:7, 6:4, 10:4) | details | 22.02.2020 |
| Quarter-finals | Arevalo M./O'Mara J. | Harrison C./Novikov D. | 2:0 (6:4, 6:4) | details | 20.02.2020 |
| 1/8-finals | Daniell M./Oswald P. | Arevalo M./O'Mara J. | 0:2 (4:6, 2:6) | details | 19.02.2020 |
USA: New York - Doubles - Main |
| Semi-finals | Johnson S./Opelka R. | Arevalo M./O'Mara J. | 2:0 (7:63, 6:4) | details | 16.02.2020 |
| Quarter-finals | Arevalo M./O'Mara J. | Lindstedt R./Sandgren T. | 2:1 (6:4, 66:7, 10:6) | details | 13.02.2020 |
| 1/8-finals | Daniell M./Oswald P. | Arevalo M./O'Mara J. | 1:2 (3:6, 6:4, 8:10) | details | 12.02.2020 |
Australia: Australian Open - Doubles - Main |
| Quarter-finals | Arevalo M./O'Mara J. | Dodig I./Polasek F. | 0:2 (3:6, 2:6) | details | 28.01.2020 |
| 1/8-finals | Peers J./Venus M. | Arevalo M./O'Mara J. | 0:2 (4:6, 67:7) | details | 26.01.2020 |
| 1/16-finals | Arevalo M./O'Mara J. | Melzer J./Roger-Vasselin E. | 2:1 (5:7, 7:5, 7:611) | details | 24.01.2020 |
| 1/32-finals | Arevalo M./O'Mara J. | Dellien H./Londero J. I. | 2:0 (6:3, 6:2) | details | 22.01.2020 |
Australia: Bendigo - Doubles - Main |
| Final | Cacic N./Molchanov D. | Arevalo M./O'Mara J. | 2:0 (7:63, 6:4) | details | 18.01.2020 |
| Semi-finals | Arends S./Hsieh C. | Arevalo M./O'Mara J. | 0:2 (3:6, 2:6) | details | 17.01.2020 |
| Quarter-finals | Banes M./Ellis B. | Arevalo M./O'Mara J. | 1:2 (7:64, 4:6, 9:11) | details | 16.01.2020 |
| 1/8-finals | Goransson A./Verbeek S. | Arevalo M./O'Mara J. | 1:2 (6:2, 5:7, 2:10) | details | 14.01.2020 |
Australia: Canberra - Doubles - Main |
| 1/8-finals | Arevalo M./O'Mara J. | Giron M./Klahn B. | 1:2 (7:62, 5:7, 4:10) | details | 08.01.2020 |
USA: US Open - Doubles - Main |
| 1/8-finals | Arevalo M./O'Mara J. | Krawietz K./Mies A. | 1:2 (6:3, 3:6, 4:6) | details | 01.09.2019 |
| 1/16-finals | Pavic M./Soares B. | Arevalo M./O'Mara J. | 0:2 (65:7, 4:6) | details | 31.08.2019 |
| 1/32-finals | Arevalo M./O'Mara J. | Paire B./Zverev M. | 2:1 (4:6, 6:4, 6:1) | details | 30.08.2019 |