The preliminary fixtures for the 2021 SARU under 20 Championship was released. The competition will be played in a single round format with semi-finals and a final to be played at the end of October.
| 07-Aug-21 | Port Elizabeth | Eastern Province | vs | Cell C Sharks | SARU u/20 Championship | |
| 07-Aug-21 | Loftus Versfeld | Vodacom Bulls | vs | Sigma Lions | SARU u/20 Championship | |
| 07-Aug-21 | Potchefstroom | Leopards | vs | Toyota Cheetahs | SARU u/20 Championship | |
| 14-Aug-21 | Toyota Stadium Bloemfontein | Toyota Cheetahs | vs | Eastern Province | SARU u/20 Championship | |
| 14-Aug-21 | Cape Town Stadium | DHL Western Province | vs | Leopards | SARU u/20 Championship | |
| 14-Aug-21 | Jonsson Kings Park Durban | Cell C Sharks | vs | Vodacom Bulls | SARU u/20 Championship | |
| 28-Aug-21 | Emirates Airline Park | Sigma Lions | vs | Cell C Sharks | SARU u/20 Championship | |
| 28-Aug-21 | Port Elizabeth | Eastern Province | vs | DHL Western Province | SARU u/20 Championship | |
| 28-Aug-21 | Loftus Versfeld | Vodacom Bulls | vs | Toyota Cheetahs | SARU u/20 Championship | |
| 04-Sep-21 | Potchefstroom | Leopards | vs | Eastern Province | SARU u/20 Championship | |
| 04-Sep-21 | Toyota Stadium Bloemfontein | Toyota Cheetahs | vs | Sigma Lions | SARU u/20 Championship | |
| 04-Sep-21 | Cape Town Stadium | DHL Western Province | vs | Vodacom Bulls | SARU u/20 Championship | |
| 18-Sep-21 | Emirates Airline Park | Sigma Lions | vs | DHL Western Province | SARU u/20 Championship | |
| 18-Sep-21 | Loftus Versfeld | Vodacom Bulls | vs | Leopards | SARU u/20 Championship | |
| 18-Sep-21 | Jonsson Kings Park Durban | Cell C Sharks | vs | Toyota Cheetahs | SARU u/20 Championship | |
| 25-Sep-21 | Cape Town Stadium | DHL Western Province | vs | Cell C Sharks | SARU u/20 Championship | |
| 25-Sep-21 | Potchefstroom | Leopards | vs | Sigma Lions | SARU u/20 Championship | |
| 25-Sep-21 | Port Elizabeth | Eastern Province | vs | Vodacom Bulls | SARU u/20 Championship | |
| 09-Oct-21 | Toyota Stadium Bloemfontein | Toyota Cheetahs | vs | DHL Western Province | SARU u/20 Championship | |
| 09-Oct-21 | Emirates Airline Park | Sigma Lions | vs | Eastern Province | SARU u/20 Championship | |
| 09-Oct-21 | Jonsson Kings Park Durban | Cell C Sharks | vs | Leopards | SARU u/20 Championship | |
| 16-Oct-21 | Semi-finals | Semi-finals | vs | Semi-finals | SARU u/20 Championship | |
| 16-Oct-21 | Semi-finals | Semi-finals | vs | Semi-finals | SARU u/20 Championship | |
| 30-Oct-21 | Final | Final | vs | Final | SARU u/20 Championship |