The Eastern Districts Tennis Association junior summer competition season for 2020/21 consisted of 14 rounds with 170 teams competing each week. All participating clubs are to be commended for the excellent sportsmanship and the spirited competition that was shown throughout the season.
Tennis SA and Eastern Districts Tennis Association would like to thank the club volunteers who looked after their respective teams during the season and formally congratulate the following winners:
Junior Competition
| Boys | |
| Division 1 | Collingrove |
| Division 2 | Trinity Gardens |
| Division 3 | |
| Division 4 | |
| Division 5 | Beaumont |
| Division 6 | Beaumont |
| Division 7 | Beaumont |
| Division 8 | Trinity Gardens |
| Division 9 | Beaumont |
| Girls | |
| Division 1 | Collingrove |
| Division 2 | East Torrens Kensington Gardens |
| Division 3 | Athelstone |
| Division 4 | Trinity Gardens |
| Division 5 | Athelstone |
| Division 6 | East Torrens Kensington Gardens |
Green Ball Competition
| Division 1 | Collingrove |
| Division 2 | East Torrens Kensington Gardens |
| Division 3 | Memorial Drive |