Led by 26 points and nine assists from JP Tokoto and a fourth-quarter flurry from Jesse Wagstaff, Perth overwhelmed a Breakers side who shot at just 24 per cent from deep and 58 per cent at the free-throw line.
Suddenly, it's close again at the top of the table, with the Breakers now holding a 9-2 record, and Perth close behind at 8-3.
Considering the two sides have shared the last eight championships, it's not a revelation to suggest that they will both be in the mix come playoff time, and this win sent a reminder of Perth's title-challenging credentials.
Having lost eight straight games in New Zealand, and staring down the barrel of a third defeat to the Breakers in the last month, Perth stepped up, in a clash which possessed many of the elements regularly seen in their rivalry.
The most predictable portion was the physicality. After a fast start by the Breakers, the points dried up, and the battle for the boards took on greater importance. Perth had 14 offensive rebounds by half-time, making the most of their second chance opportunities, but the Breakers made it hard for them to find open shots.
The second quarter was low-scoring, with both sides using the majority of their shot clock to find an acceptable open look. The Breakers were especially struggling to score, as only Alex Pledger, with 15 points on 7/8 shooting, tallied more than 10 points.
One of the Breakers' strengths this season has been managing to stay in touch when they aren't playing well, but that was severely tested as Perth turned up their defensive pressure.
A strategically employed full-court press briefly threw the Breakers off their game, and it was enough to kick-start a 10-0 run which gave the visitors a rare significant lead.
The Breakers fought back – getting within two points in the fourth quarter - but Wagstaff proved the difference-maker, hitting three triples in quick succession to regain Perth's advantage.
For just the second time this season, the Breakers didn't have a counter-punch left in them, with Perth pulling away to record a victory which was as impressive as it was important.
Wildcats 89 (JP Tokoto 25, Jesse Wagstaff 19)
Breakers 73 (Alex Pledger 15, Edgar Sosa 10)
HT: 35-36