The Alhambra-Union tight five set the foundation for a much needed bonus point in its win over Kaikorai at the North Ground.
But it was a far from convincing display from the reigning champion, which turned a two-try advantage in the first quarter into an eight-point deficit at half-time.
Stern words must have been summoned during the break, as Alhambra's big forward pack set about taking toll on the Kaikorai defence, creating space for a further two tries and the rare occurrence of a dropped goal.
Kaikorai competed well, notably through its loose forward trio, in particular Hamish Chrisp, playing his 50th premier game.
Cam Rutherford directed play well from first five-eighth, and Mark McGregor was rock solid outside him.
But a tidal wave of destruction erupting from the Alhambra-Union tight five eventually caused Kaikorai's downfall.
The front row trio of Dane Marakai, Ben Pereira and Scott Manson, and the line-out skills of Cowan Finch, proved the difference between the two sides.
In the Alhambra-Union backline, Luke Reihana always appeared threatening along with winger Paul Archbold.
Alhambra-Union 30 (Wayne Gibson, Sepulona Masoe, Luke Reihana, Mana Faraimo tries; Reihana 2 conversions, penalty goal, Peter Breen dropped goal), Kaikorai 21 (Cam Rutherford, Guy Ferguson, Hamish Chrisp tries; Rutherford 3 conversions).
Half-time: Kaikorai 21-13.
Referee: Doug Rodgers.
