World: Davis Cup - World Group - Doubles - Main |
| | Krawietz K./Puetz T. | Marach O./Oswald P. | 2:0 (6:3, 6:4) | details | 28.11.2021 |
| | Cacic N./Krajinovic F. | Marach O./Oswald P. | 2:1 (7:64, 4:6, 6:3) | details | 26.11.2021 |
| | Djokovic N./Krajinovic F. | Marach O./Oswald P. | CAN. | details | 26.11.2021 |
Austria: Vienna - Doubles - Main |
| Quarter-finals | Marach O./Oswald P. | Peers J./Polasek F. | 1:2 (7:64, 3:6, 4:10) | details | 28.10.2021 |
| 1/8-finals | Erler A./Miedler L. | Marach O./Oswald P. | 0:2 (3:6, 5:7) | details | 25.10.2021 |
Belgium: Antwerp - Doubles - Main |
| Quarter-finals | Marach O./Oswald P. | Mahut N./Martin F. | 0:2 (63:7, 4:6) | details | 21.10.2021 |
| 1/8-finals | Marach O./Oswald P. | Erlich J./Goransson A. | 2:1 (4:6, 6:4, 10:6) | details | 20.10.2021 |
Bulgaria: Sofia - Doubles - Main |
| Final | O'Mara J./Skupski K. | Marach O./Oswald P. | 2:0 (6:3, 6:4) | details | 03.10.2021 |
| Semi-finals | Marach O./Oswald P. | Gonzalez S./Molteni A. | 2:1 (2:6, 7:5, 10:6) | details | 02.10.2021 |
| Quarter-finals | Demoliner M./Matos R. | Marach O./Oswald P. | 0:2 (66:7, 63:7) | details | 30.09.2021 |
| 1/8-finals | Bopanna R./Qureshi A. | Marach O./Oswald P. | 1:2 (2:6, 7:61, 7:10) | details | 28.09.2021 |
France: Metz - Doubles - Main |
| Quarter-finals | Marach O./Oswald P. | Hurkacz H./Zielinski J. | 0:2 (3:6, 4:6) | details | 22.09.2021 |
| 1/8-finals | Marach O./Oswald P. | Mahut N./Pospisil V. | 2:0 (6:4, 6:3) | details | 21.09.2021 |
USA: US Open - Doubles - Main |
| 1/32-finals | Marach O./Oswald P. | Erlich J./Harris L. | 1:2 (2:6, 7:63, 2:6) | details | 03.09.2021 |
USA: Winston-Salem - Doubles - Main |
| Semi-finals | Arevalo M./Middelkoop M. | Marach O./Oswald P. | 2:0 (6:3, 6:3) | details | 26.08.2021 |
| Quarter-finals | Marach O./Oswald P. | Mahut N./Martin F. | WO. | details | 25.08.2021 |
| 1/8-finals | Marach O./Oswald P. | Gille S./Vliegen J. | 2:1 (7:64, 5:7, 10:4) | details | 23.08.2021 |
Canada: Toronto - Doubles - Main |
| 1/8-finals | Krawietz K./Tecau H. | Marach O./Oswald P. | 2:1 (6:2, 1:6, 12:10) | details | 12.08.2021 |
| 1/16-finals | Behar A./Escobar G. | Marach O./Oswald P. | 1:2 (7:5, 3:6, 11:13) | details | 09.08.2021 |
World: Olympic Games - Doubles - Main |
| 1/8-finals | Marach O./Oswald P. | Cabal J. S./Farah R. | 0:2 (4:6, 1:6) | details | 26.07.2021 |
| 1/16-finals | Millman J./Saville L. | Marach O./Oswald P. | 0:2 (5:7, 2:6) | details | 25.07.2021 |
Morocco: Marrakech - Doubles - Main |
| Quarter-finals | Paes L./Paire B. | Marach O./Oswald P. | 2:1 (7:5, 3:6, 12:10) | details | 10.04.2019 |
| 1/8-finals | Djere L./Zimonjic N. | Marach O./Oswald P. | 1:2 (5:7, 6:3, 2:10) | details | 08.04.2019 |
World: Davis Cup - Group I - Doubles - Main |
| | Marach O./Oswald P. | Ivashka I./Vasilevski A. | 2:0 (6:3, 7:65) | details | 03.02.2018 |
| | Marach O./Oswald P. | Betov S./Vasilevski A. | CAN. | details | 03.02.2018 |
Switzerland: Gstaad - Doubles - Main |
| Final | Eysseric J./Skugor F. | Marach O./Oswald P. | 1:2 (3:6, 6:4, 8:10) | details | 30.07.2017 |
| Semi-finals | Jebavy R./Middelkoop M. | Marach O./Oswald P. | 0:2 (3:6, 3:6) | details | 28.07.2017 |
| Quarter-finals | Lajovic D./Marcan D. | Marach O./Oswald P. | 0:2 (63:7, 4:6) | details | 27.07.2017 |
| 1/8-finals | Duran G./Erlich J. | Marach O./Oswald P. | 1:2 (3:6, 6:2, 4:10) | details | 26.07.2017 |
France: Aix en Provence - Doubles - Main |
| Final | Duran G./Gonzalez M. | Marach O./Oswald P. | 1:2 (1:6, 6:4, 7:10) | details | 07.05.2016 |
| Semi-finals | Marach O./Oswald P. | Mektic N./Sancic A. | 2:0 (6:3, 7:64) | details | 05.05.2016 |
| Quarter-finals | Benneteau J./Roger-Vasselin E. | Marach O./Oswald P. | 0:2 (64:7, 4:6) | details | 04.05.2016 |
| 1/8-finals | Eysseric J./Guez D. | Marach O./Oswald P. | 0:2 (0:6, 3:6) | details | 03.05.2016 |
Switzerland: Geneva - Doubles - Main |
| 1/8-finals | Huey T./Lipsky S. | Marach O./Oswald P. | 2:0 (6:2, 6:3) | details | 17.05.2015 |
Turkey: Istanbul - Doubles - Main |
| Quarter-finals | Albot R./Lajovic D. | Marach O./Oswald P. | 2:1 (69:7, 6:2, 10:8) | details | 29.04.2015 |
| 1/8-finals | Brunstrom J./Erlich J. | Marach O./Oswald P. | 0:2 (5:7, 5:7) | details | 27.04.2015 |
Romania: Bucharest - Doubles - Main |
| 1/8-finals | Marach O./Oswald P. | Monroe N./Sitak A. | 0:2 (3:6, 64:7) | details | 21.04.2015 |
Switzerland: Geneva - Doubles - Main |
| Final | Marach O./Oswald P. | Brunstrom J./Monroe N. | 1:2 (7:5, 5:7, 6:10) | details | 02.11.2014 |
| Semi-finals | Marach O./Oswald P. | Skupski K./Skupski N. | 2:0 (6:3, 6:4) | details | 01.11.2014 |
| Quarter-finals | Marach O./Oswald P. | Albot R./Hanescu V. | 2:0 (6:3, 7:5) | details | 30.10.2014 |
| 1/8-finals | Marach O./Oswald P. | Cerretani J./Siljestrom A. | 2:1 (4:6, 7:5, 10:5) | details | 29.10.2014 |
Belgium: Mons - Doubles - Main |
| Quarter-finals | Gicquel M./Mahut N. | Marach O./Oswald P. | 2:0 (7:5, 6:3) | details | 02.10.2014 |
| 1/8-finals | Bednarek T./Kowalczyk M. | Marach O./Oswald P. | 0:2 (4:6, 1:6) | details | 01.10.2014 |