Stadium: Court 1 Round: 62 Ground: Clay
| ITF M15 Gdynia | 2021/08/09 08:00 | Andrea Guerrieri v Juliusz Bienkiewicz | 6-2,2-6,7-10 |
| ITF M15 Gdynia | 2021/08/08 08:00 | Juliusz Bienkiewicz v Maciej Kos | 6-4,6-3 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 08:00 | Tomas Lanik v Juliusz Bienkiewicz | 4-6,6-1,10-5 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/01 09:30 | Pietro Schiavetti v Juliusz Bienkiewicz | 2-6,6-2,5-10 |
| ITF M25 Wroclaw | 2021/06/27 12:30 | Juliusz Bienkiewicz v Taiyo Yamanaka | 3-6,1-6 |
| Polish National Tour | 2020/07/29 10:00 | Kacper Zuk v Juliusz Bienkiewicz | 6-0,6-0 |
| ITF M15 Liberec | 2019/10/21 12:00 | Juliusz Bienkiewicz v Domagoj Biljesko | 7-6,3-6,6-10 |
| ITF M25 Poznan | 2019/08/21 14:55 | Juliusz Bienkiewicz v Vit Kopriva | 5-7,0-6 |
| ITF M15 Gdynia | 2021/08/09 08:00 | Sergo Sikharulidze v Daniel De Jonge | 3-6,2-6 |
| ITF M15 Gdynia | 2021/08/08 08:00 | Valerio Aboian v Daniel De Jonge | 5-7,6-7 |
| ITF M15 Frederiksberg | 2021/08/05 10:25 | Christian Sigsgaard v Daniel De Jonge | 6-4,7-6 |
| ITF M15 Frederiksberg | 2021/08/03 09:20 | Daniel De Jonge v Patrick Kypson | 6-3,7-6 |
| ITF M25 Marburg | 2021/07/05 12:05 | Patrick Zahraj v Daniel De Jonge | 6-3,6-2 |
| ITF M25 The Hague | 2021/07/01 07:30 | Marko Tepavac v Daniel De Jonge | 7-5,6-1 |
| ITF M25 The Hague | 2021/06/27 08:00 | Max Van Wijk v Daniel De Jonge | 2-6,0-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/20 09:30 | Daniel De Jonge v Sebastian Grundtvig Jorgensen | 6-4,4-6,2-6 |