SCA Twenty20 Past Premiers
Season | 1st Grade | 2nd Grade | 3rd Grade | 4th Grade | 5th Grade | 6th Grade | 7th Grade | 8th Grade | Women's |
| 2019-20 | New Norfolk | Richmond/Cambridge | St Aidans | St Virgil's | Rokeby | Mackillop | Knights | - | Wellington |
| 2018-19 | St Aidans | Knights | New Norfolk | WP Rockers | St Virgils | Sorell | Sorell | - | Brighton |
| 2017-18 | St Aidans | Rokeby | Brighton | Bothwell | St Virgils | Rokeby | New Norfolk | Claremont | |
| 2016-17 | Wellington | Knights | St Aidans | Bagdad | Weily Park | Dynnyrne | New Norfolk | St Annes | |
| 2015-16 | Wellington | Knights | McRobies Gully | - | - | - | - | - | |
| 2014-15 | St Annes | Knights | - | - | - | - | - | - | |
| 2013-14 | Wellington | Knights | - | - | - | - | - | - | |
| 2012-13 | St Virgils | Campania | - | - | - | - | - | - | |
| 2011-12 | St Aidans | McRobies Gully | - | - | - | - | - | - | |
| 2010-11 | St Aidans | - | - | - | - | - | - | - | |
| 2009-10 | St Aidans | - | - | - | - | - | - | - | |
| 2008-09 | Claremont | - | - | | | | | | |