Southern Suburbs' loss was Barossa's gain a big weekend of men's Premier Grade action while Burnside clinched the Arnfield Gardiner Cup in Round 12 of RUSA.
Tries were plentiful in the Rams' 62-34 win over Adelaide University with Ilaitia Waqairatavo's hat-trick headlining a 10-try effort in Tanunda.
Uni secured a losing bonus point with five tries but fell well short of Barossa's firepower with the Rams leaping into fourth following Burnside's 36-28 win over Souths.
Ben Moffat's first-half hat-trick gave the Double Blues plenty of breathing room while Souths star Atino Vaihu also bagged a treble to secure a Bulls losing bonus point at Parkinson Oval.
Elsewhere, Brighton tightened their grip on a top-two berth with a 82-5 win over Port Adelaide with Woodville also enjoying a comfortable win, downing Onkaparinga 45-0 at Gleneagles Reserve.
In the women's competition, Burnside stole the limelight from Souths in a thrilling 19-17 Arnfield-Gardiner Cup win.
The sides scored three tries apiece with Burnside's Nikki Kelly proving the difference, scoring two of her own and slotting a crucial conversion to anchor a two-point win.
Woodville's unbeaten women's run continued with the Wasps downing Onkas 40-5 and Uni rolled home 62-0 over Barossa for their second win of the season.
Third Grade proceedings were dominated by Tigers stalwart John Fidock's 600th game - eventually won 33-22 by unbeaten Brighton Gold - while four positions are tightening in Reserve Grade following wins to Old Colls and Souths.
