In the morning, a tight match between West Torrens and Kensington came down to the wire, with the Browns hitting the winning runs in the final over.
The Eagles’ top five all made double-figure contributions, led by 21 a-piece from Angela Treloar and Paris Hall.
Chasing 104, the Browns relied heavily on Eliza Doddridge (49), but supported by teenager Rachel Church (16), the side secured the win.
Taking on Sturt in the afternoon, allrounder Sarah Lowe starred, striking 31 with the bat and taking a handy 2/14, while fellow Brown Katelyn Pope made 29 not out and took 1/12.
Opener Doddridge (19) once again made an impact, helping to push the Browns to 7/131.
A slow-scoring effort from Sturt made for a tough chase, with Eliza Bartlett (30 not out) and Emma de Broughe (19) providing the bulk of the response.
Sturt were dismissed for 80 after 19 overs, with Shania McKinnon taking 3/14 and completing a run out in the field.
De Broughe (50) and Northern Districts’ Steph Beazleigh (58) both struck unbeaten half centuries in a runaway win for the Blues in the afternoon.
Both players blasted their highest T20 scores at First Grade level and Beazleigh, complemented by stalwart Neisha Iles (18 not out), pushed the Jets to 4/107.
In reply, a 72-run stand between de Broughe and Dani Reid (27) propelled the Blues to 110 inside the 15th over, just three wickets down.
Southern District enjoyed a comfortable win over Northern Districts, with experienced Stingray Hannah Sampson posting an unbeaten 49.
Southerns reached 5/130 with Darcie Brown the pick of the Jets' bowlers, taking 3/27.
Kelly Armstrong (3/14) and Gemma Kennedy (2/8) made it difficult for the Jets batters and despite Mary Waldron (39) and Iles’ (18 not out) best efforts, they were restricted to just 7/98.