Stadium: Central Round: 26 Ground: Hardcourt indoor
| Challenger - Pau | 2020/02/25 15:40 | Maxime Janvier v Janowicz, Jerzy | 4-6,4-6 |
| Challenger - Pau | 2020/02/24 16:35 | Zdenek Kolar v Janowicz, Jerzy | 4-6,5-7 |
| Challenger - Quimper | 2020/01/27 19:15 | Janowicz, Jerzy v Evan Furness | 6-3,6-4 |
| Challenger Rennes | 2020/01/22 13:00 | Janowicz, Jerzy v Constant Lestienne | 6-7,4-6 |
| Challenger Rennes | 2020/01/20 18:15 | Tomas Machac v Janowicz, Jerzy | 6-7,7-6,4-6 |
| Challenger Bratislava | 2017/11/08 18:35 | Bernard Tomic v Janowicz, Jerzy | 6-7,6-7 |
| Challenger Bratislava | 2017/11/07 17:10 | Janowicz, Jerzy v Norbert Gombos | 3-6,7-5,7-6 |
| Challenger Eckental | 2017/11/05 13:00 | Janowicz, Jerzy v Maximilian Marterer | 6-7,6-3,3-6 |
| Challenger - Pau | 2020/02/25 19:50 | Gojo, Borna v Lorenzo Giustino | 6-7,6-7 |
| Bergamo, Italy | 2020/02/20 10:20 | Lorenzo Giustino v Hugo Gaston | 3-6,6-3,4-6 |
| Bergamo, Italy | 2020/02/18 19:55 | Lorenzo Giustino v Nino Serdarusic | 6-7,6-3,7-6 |
| Challenger Launceston | 2020/02/07 02:10 | Lorenzo Giustino v Kimmer Coppejans | 6-7,7-5,4-6 |
| Challenger Launceston | 2020/02/06 03:40 | Lorenzo Giustino v Dane Sweeny | 6-2,6-3 |
| Challenger Launceston | 2020/02/04 23:00 | Lorenzo Giustino v Kavcic, Blaz | 0-6,7-5,7-6 |
| Challenger - Burnie | 2020/01/30 01:30 | Lorenzo Giustino v Zhe Li | 4-6,2-6 |
| Challenger - Burnie | 2020/01/28 03:00 | Lorenzo Giustino v Andrea Vavassori | 6-3,6-3 |