Poland: Szczecin - Singles - Main |
| 1/16-finals | Janowicz J. | Choinski J. | 0:2 (3:6, 4:6) | details | 13.09.2022 |
| 1/16-finals | Janowicz J. | Hanfmann Y. | CAN. | details | 13.09.2022 |
Spain: Seville - Singles - Main |
| Quarter-finals | Skatov T. | Janowicz J. | 2:0 (6:3, 6:2) | details | 08.09.2022 |
| 1/8-finals | Janowicz J. | Taberner C. | 2:1 (1:6, 6:4, 7:68) | details | 07.09.2022 |
| 1/16-finals | Janowicz J. | Ferreira Silva F. | 2:0 (7:66, 6:1) | details | 06.09.2022 |
Spain: Mallorca - Singles - Main |
| Quarter-finals | Nardi L. | Janowicz J. | 2:1 (6:2, 3:6, 6:1) | details | 02.09.2022 |
| 1/8-finals | Janowicz J. | Peniston R. | 2:0 (6:2, 6:4) | details | 01.09.2022 |
| 1/16-finals | Ofner S. | Janowicz J. | 0:2 (3:6, 4:6) | details | 30.08.2022 |
Poland: Grodzisk Mazowiecki - Singles - Main |
| 1/8-finals | Mayot H. | Janowicz J. | 2:1 (6:4, 5:7, 6:3) | details | 18.08.2022 |
| 1/16-finals | Janowicz J. | Seyboth Wild T. | 2:0 (6:4, 6:4) | details | 16.08.2022 |
Poland: M15 Wroclaw - Singles - Main |
| 1/8-finals | Kasnikowski M. | Janowicz J. | 2:1 (6:3, 3:6, 6:2) | details | 01.07.2022 |
| 1/16-finals | Barnat J. | Janowicz J. | 0:2 (3:6, 4:6) | details | 28.06.2022 |
Poland: M15 Bytom - Singles - Main |
| 1/8-finals | Janowicz J. | Kielan S. | 1:2 (3:6, 7:67, 4:6) | details | 09.06.2022 |
| 1/16-finals | Orlov V. | Janowicz J. | 1:2 (6:3, 65:7, 3:6) | details | 08.06.2022 |
Poland: Poznan - Singles - Main |
| 1/16-finals | Ejupovic E. | Janowicz J. | 2:0 (7:66, 6:1) | details | 31.05.2022 |
Switzerland: Lugano - Singles - Qualification |
| Semi-finals | Yevseyev D. | Janowicz J. | 2:1 (4:6, 6:3, 7:64) | details | 27.03.2022 |
World: Davis Cup - World Group II - Singles - Preliminary |
| | Janowicz J. | Lam C. | CAN. | details | 07.03.2020 |
| | Janowicz J. | Yeung P. L. | 2:1 (65:7, 7:5, 6:4) | details | 06.03.2020 |
France: Pau - Singles - Main |
| Final | Janowicz J. | Gulbis E. | 0:2 (3:6, 4:6) | details | 01.03.2020 |
| Semi-finals | Vesely J. | Janowicz J. | 1:2 (4:6, 7:66, 67:7) | details | 29.02.2020 |
| Quarter-finals | Grenier H. | Janowicz J. | 0:2 (3:6, 3:6) | details | 28.02.2020 |
| 1/8-finals | Janowicz J. | Giustino L. | 2:1 (6:4, 65:7, 6:3) | details | 27.02.2020 |
| 1/16-finals | Janvier M. | Janowicz J. | 0:2 (4:6, 4:6) | details | 25.02.2020 |
| 1/32-finals | Kolar Z. | Janowicz J. | 0:2 (4:6, 5:7) | details | 24.02.2020 |
France: Quimper - Singles - Main |
| 1/16-finals | Janowicz J. | Halys Q. | WO. | details | 29.01.2020 |
| 1/32-finals | Janowicz J. | Furness E. | 2:0 (6:3, 6:4) | details | 27.01.2020 |
France: Rennes - Singles - Main |
| 1/16-finals | Janowicz J. | Lestienne C. | 0:2 (63:7, 4:6) | details | 22.01.2020 |
| 1/32-finals | Machac T. | Janowicz J. | 1:2 (63:7, 7:64, 4:6) | details | 20.01.2020 |
Slovakia: Bratislava - Singles - Main |
| Quarter-finals | Kukushkin M. | Janowicz J. | 1:1 RET. (3:6, 7:62, 4:0) | details | 10.11.2017 |
| 1/8-finals | Tomic B. | Janowicz J. | 0:2 (63:7, 62:7) | details | 08.11.2017 |
| 1/16-finals | Janowicz J. | Gombos N. | 2:1 (3:6, 7:5, 7:65) | details | 07.11.2017 |
Germany: Eckental - Singles - Main |
| Final | Janowicz J. | Marterer M. | 1:2 (68:7, 6:3, 3:6) | details | 05.11.2017 |
| Semi-finals | Janowicz J. | Bachinger M. | 2:1 (610:7, 6:4, 6:3) | details | 04.11.2017 |
| Quarter-finals | Bemelmans R. | Janowicz J. | 0:2 (4:6, 4:6) | details | 03.11.2017 |
| 1/8-finals | Sijsling I. | Janowicz J. | 0:2 (63:7, 3:6) | details | 02.11.2017 |
| 1/16-finals | Auger-Aliassime F. | Janowicz J. | 0:2 (63:7, 1:6) | details | 01.11.2017 |
Austria: Vienna - Singles - Qualification |
| Semi-finals | Janowicz J. | Garcia-Lopez G. | 0:2 (67:7, 4:6) | details | 21.10.2017 |
Sweden: Stockholm - Singles - Main |
| 1/8-finals | Dimitrov G. | Janowicz J. | 2:0 (7:5, 7:65) | details | 19.10.2017 |
| 1/16-finals | Herbert P. | Janowicz J. | 1:2 (2:6, 6:3, 3:6) | details | 18.10.2017 |
| 1/16-finals | Bolelli S. | Janowicz J. | CAN. | details | 17.10.2017 |
Sweden: Stockholm - Singles - Qualification |
| Final | Janowicz J. | Zopp J. | 2:1 (6:1, 63:7, 6:4) | details | 16.10.2017 |
| Semi-finals | Janowicz J. | Arnaboldi A. | 2:1 (61:7, 7:5, 6:1) | details | 15.10.2017 |
Italy: Ortisei - Singles - Main |
| 1/16-finals | Janowicz J. | Seppi A. | 0:2 (2:6, 2:6) | details | 10.10.2017 |
France: Orleans - Singles - Main |
| 1/16-finals | Fucsovics M. | Janowicz J. | 2:0 (7:64, 7:65) | details | 25.09.2017 |
Poland: Szczecin - Singles - Main |
| Quarter-finals | Janowicz J. | Mayer F. | 0:2 (2:6, 63:7) | details | 15.09.2017 |
| 1/8-finals | Janowicz J. | De Schepper K. | 2:0 (6:1, 7:62) | details | 13.09.2017 |
| 1/16-finals | Janowicz J. | Duran G. | 2:0 (6:4, 6:1) | details | 12.09.2017 |