Belgium: Antwerp - Doubles - Main |
| 1/8-finals | Petzschner P./Tiafoe F. | Mahut N./Roger-Vasselin E. | 0:2 (2:6, 2:6) | details | 16.10.2018 |
China: Chengdu - Doubles - Main |
| 1/8-finals | Albot R./Jaziri M. | Fognini F./Petzschner P. | CAN. | details | 26.09.2018 |
Russia: St. Petersburg - Doubles - Main |
| Quarter-finals | Petzschner P./Puetz T. | Jebavy R./Middelkoop M. | 0:2 (1:6, 4:6) | details | 20.09.2018 |
| 1/8-finals | Petzschner P./Puetz T. | Bracciali D./Cecchinato M. | 2:0 (6:2, 6:0) | details | 17.09.2018 |
USA: Chicago - Doubles - Main |
| 1/8-finals | Bemelmans R./Petzschner P. | Estrella V./Ymer E. | CAN. | details | 04.09.2018 |
USA: US Open - Doubles - Main |
| 1/16-finals | Petzschner P./Puetz T. | Haase R./Middelkoop M. | 1:2 (3:6, 6:3, 1:6) | details | 31.08.2018 |
| 1/32-finals | Petzschner P./Puetz T. | Eysseric J./Fucsovics M. | 2:0 (6:1, 6:2) | details | 29.08.2018 |
Austria: Kitzbuhel - Doubles - Main |
| Semi-finals | Melzer J./Petzschner P. | Bracciali D./Delbonis F. | 0:1 RET. (2:6, 0:3) | details | 03.08.2018 |
| Quarter-finals | Novak D./Thiem D. | Melzer J./Petzschner P. | WO. | details | 02.08.2018 |
| 1/8-finals | Melzer J./Petzschner P. | Daniell M./Koolhof W. | 2:0 (7:64, 6:4) | details | 31.07.2018 |
Germany: Hamburg - Doubles - Main |
| 1/8-finals | Petzschner P./Puetz T. | Cuevas P./Lopez M. | 0:2 (4:6, 1:6) | details | 25.07.2018 |
Sweden: Bastad - Doubles - Main |
| Semi-finals | Melzer J./Petzschner P. | Peralta J./Zeballos H. | 0:2 (3:6, 2:6) | details | 20.07.2018 |
| Quarter-finals | Melzer J./Petzschner P. | Daniell M./Koolhof W. | 2:0 (7:64, 6:3) | details | 19.07.2018 |
| 1/8-finals | Melzer J./Petzschner P. | Balaji N. S./Vardhan V. | 2:1 (5:7, 6:4, 10:8) | details | 18.07.2018 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/8-finals | Petzschner P./Puetz T. | McLachlan B./Struff J-L. | 0:3 (3:6, 4:6, 63:7) | details | 09.07.2018 |
| 1/16-finals | Herbert P./Mahut N. | Petzschner P./Puetz T. | 1:3 (4:6, 7:63, 64:7, 3:6) | details | 07.07.2018 |
| 1/32-finals | Harrison R./Pospisil V. | Petzschner P./Puetz T. | 0:3 (4:6, 68:7, 2:6) | details | 05.07.2018 |
Germany: Halle - Doubles - Main |
| 1/8-finals | Kohlschreiber P./Petzschner P. | Mektic N./Peya A. | 0:2 (2:6, 4:6) | details | 19.06.2018 |
Germany: Stuttgart - Doubles - Main |
| Final | Petzschner P./Puetz T. | Lindstedt R./Matkowski M. | 2:0 (7:65, 6:3) | details | 17.06.2018 |
| Semi-finals | Qureshi A./Rojer J. | Petzschner P./Puetz T. | 0:2 (62:7, 3:6) | details | 15.06.2018 |
| Quarter-finals | Demoliner M./Lopez F. | Petzschner P./Puetz T. | 1:2 (4:6, 7:65, 6:10) | details | 14.06.2018 |
| 1/8-finals | Balaji N. S./Vardhan V. | Petzschner P./Puetz T. | 1:2 (2:6, 6:3, 7:10) | details | 13.06.2018 |
United Kingdom: Surbiton - Doubles - Main |
| 1/8-finals | Skupski K./Skupski N. | Nys H./Petzschner P. | 2:1 (2:6, 7:62, 10:5) | details | 04.06.2018 |
France: French Open - Doubles - Main |
| 1/32-finals | Marterer M./Petzschner P. | Bracciali D./Seppi A. | 1:2 (6:2, 66:7, 4:6) | details | 30.05.2018 |
Germany: Heilbronn - Doubles - Main |
| Quarter-finals | Molchanov D./Zelenay I. | Petzschner P./Puetz T. | 2:1 (6:2, 2:6, 10:6) | details | 17.05.2018 |
| 1/8-finals | Novikov D./Vatutin A. | Petzschner P./Puetz T. | WO. | details | 16.05.2018 |
France: Aix en Provence - Doubles - Main |
| Final | Andreozzi G./De Schepper K. | Petzschner P./Puetz T. | 1:2 (7:63, 2:6, 8:10) | details | 12.05.2018 |
| Semi-finals | Petzschner P./Puetz T. | Moraing M./Otte O. | 2:0 (6:3, 6:1) | details | 11.05.2018 |
| Quarter-finals | Petzschner P./Puetz T. | Duran G./Gonzalez M. | 2:1 (7:5, 3:6, 10:6) | details | 10.05.2018 |
| 1/8-finals | Lindstedt R./Stakhovsky S. | Petzschner P./Puetz T. | 0:2 (64:7, 3:6) | details | 09.05.2018 |
Germany: Munich - Doubles - Main |
| 1/8-finals | Krawietz K./Marterer M. | Melzer J./Petzschner P. | 2:1 (7:67, 5:7, 10:8) | details | 30.04.2018 |
Taiwan: Taipei - Doubles - Main |
| 1/8-finals | Petzschner P./Puetz T. | Wu Tung-Lin/Yu Ch. Y. | CAN. | details | 11.04.2018 |
USA: Irving - Doubles - Main |
| Final | Petzschner P./Peya A. | Albot R./Ebden M. | 2:0 (6:2, 6:4) | details | 18.03.2018 |
| Semi-finals | Petzschner P./Peya A. | Koolhof W./Sitak A. | 2:0 (6:4, 7:5) | details | 17.03.2018 |
| Quarter-finals | Petzschner P./Peya A. | Berrettini M./Fabbiano T. | 2:1 (6:3, 4:6, 10:6) | details | 16.03.2018 |
| 1/8-finals | Kontinen H./Peers J. | Petzschner P./Peya A. | 0:2 (5:7, 5:7) | details | 15.03.2018 |
USA: Indian Wells - Doubles - Main |
| 1/16-finals | Petzschner P./Thiem D. | Murray J./Soares B. | 0:2 (3:6, 4:6) | details | 09.03.2018 |
USA: Indian Wells - Doubles - Main |
| Quarter-finals | Petzschner P./Smyczek T. | Polansky P./Shamasdin A. | 1:2 (4:6, 6:4, 8:10) | details | 01.03.2018 |
| 1/8-finals | Nys H./Skupski N. | Petzschner P./Smyczek T. | 0:2 (3:6, 4:6) | details | 28.02.2018 |
France: Marseille - Doubles - Main |
| 1/8-finals | Erlich J./Petzschner P. | Eysseric J./Simon G. | 0:2 (3:6, 4:6) | details | 19.02.2018 |
Netherlands: Rotterdam - Doubles - Qualification |
| Semi-finals | Arends S./De Bakker T. | Petzschner P./Struff J-L. | 2:1 (5:7, 7:5, 10:8) | details | 11.02.2018 |
Bulgaria: Sofia - Doubles - Main |
| 1/8-finals | Lindstedt R./Nestor D. | Erlich J./Petzschner P. | 2:1 (3:6, 7:65, 10:5) | details | 07.02.2018 |
Sweden: Bastad - Doubles - Main |
| Final | Arends S./Middelkoop M. | Knowle J./Petzschner P. | 1:2 (2:6, 6:3, 7:10) | details | 23.07.2017 |
| Semi-finals | Knowle J./Petzschner P. | Ymer E./Ymer M. | 2:1 (6:4, 2:6, 10:3) | details | 22.07.2017 |
United Kingdom: Wimbledon - Mixed Doubles - Main |
| 1/16-finals | Mirnyi M./Makarova E. | Petzschner P./Flipkens K. | 2:0 (6:1, 6:3) | details | 08.07.2017 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/16-finals | Kubot L./Melo M. | Petzschner P./Peya A. | 3:2 (6:2, 5:7, 6:3, 3:6, 11:9) | details | 08.07.2017 |