| Serbia - Liga sub-19 | 2020/10/25 14:00 | RFK Novi Sad 1921 sub-19 v Radnicki Nis sub-19 | D | 2-2 |
| Serbia - Liga sub-19 | 2021/05/01 12:00 | FK TSC Backa Topola sub-19 v Radnicki Nis sub-19 | L | 1-0 |
| Serbia - Liga sub-19 | 2021/04/28 11:00 | Radnicki Nis sub-19 v FK Napredak sub-19 | D | 0-0 |
| Serbia - Liga sub-19 | 2021/04/24 11:00 | FK Brodarac sub-19 v Radnicki Nis sub-19 | L | 3-0 |
| Serbia - Liga sub-19 | 2021/04/17 09:00 | Radnicki Nis sub-19 v OFK Belgrade sub-19 | L | 1-2 |
| Serbia - Liga sub-19 | 2021/04/13 11:30 | Partizan Belgrado sub-19 v Radnicki Nis sub-19 | L | 3-2 |
| Serbia - Liga sub-19 | 2021/04/10 09:00 | Radnicki Nis sub-19 v Vojvodina sub-19 | L | 1-2 |
| Serbia - Liga sub-19 | 2021/04/03 09:00 | FK Radnicki 1923 sub-19 v Radnicki Nis sub-19 | L | 3-1 |
| Serbia - Liga sub-19 | 2021/03/31 11:00 | Radnicki Nis sub-19 v Cukaricki sub-19 | W | 1-0 |
| Serbia - Liga sub-19 | 2021/05/01 09:00 | RFK Novi Sad 1921 sub-19 v Cukaricki sub-19 | W | 3-1 |
| Serbia - Liga sub-19 | 2021/04/28 10:00 | Crvena Zvezda sub-19 v RFK Novi Sad 1921 sub-19 | L | 6-0 |
| Serbia - Liga sub-19 | 2021/04/24 09:00 | RFK Novi Sad 1921 sub-19 v FK Graficar sub-19 | L | 0-2 |
| Serbia - Liga sub-19 | 2021/04/17 11:00 | FK Spartak Zdrepceva Krv sub-19 v RFK Novi Sad 1921 sub-19 | L | 3-0 |
| Serbia - Liga sub-19 | 2021/04/14 11:00 | RFK Novi Sad 1921 sub-19 v Mladost Lucani sub-19 | L | 1-4 |
| Serbia - Liga sub-19 | 2021/04/10 09:00 | FK IMT Novi Beograd sub-19 v RFK Novi Sad 1921 sub-19 | D | 2-2 |
| Serbia - Liga sub-19 | 2021/04/03 09:00 | RFK Novi Sad 1921 sub-19 v FK Rad Beograd sub-19 | L | 1-2 |
| Serbia - Liga sub-19 | 2021/03/27 13:30 | FK Vozdovac sub-U19 v RFK Novi Sad 1921 sub-19 | L | 6-1 |