Undermanned Gilas Pilipinas didn’t have the firepower to match the might of host Australia.

The Boomers ignited a decisive opening-period barrage and left the Filipinos wanting in a 92-49 third window crushing to emerge unscathed in the first round of the 2027 FIBA World Cup Asian Qualifiers Monday at the RAC Arena in Perth.

Australia’s crippling defense forced Gilas, already crippled with the absence of naturalized player Justin Brownlee, to commit 19 turnovers.

The Australians stepped on the gas pedal midway in the first quarter with a smoking 16-0 blast and kept their foot firmly down to complete a 6-game sweep of the home-and-away first round.

Taking advantage of their 30 points off Gilas’ turnovers, the Boomers repeated over the Filipinos that they routed 93-66 in the second window last March at the Mall of Asia Arena.

Gilas closed the first round with four straight losses for a carryover 2-4 win-loss record heading into the next phase starting in August.

Australia, New Zealand (4-2) and Gilas will be joined by Iran, Jordan and Syria in the second round.

The Philippines will need to sweep the Middle Eastern teams in the next round to better its chances of advancing to a fourth straight World Cup appearance next year in Doha.

Battered Brownlee was ruled out of Gilas’ final road game to end the first round after suffering a hamstring strain and peroneal tendinopathy on his right leg as well as swelling and cartilage defects on the left knee.

The 38-year-old Brownlee, who came into the window worn out from a grueling Philippine Basketball Association (PBA) Season 50 Commissioner’s Cup championship run for Barangay Ginebra, sat on the bench helplessly as the Aussies bullied their way to an easy win.

Brownlee played in Gilas’ stinging 102-106 double-overtime loss last Friday but only scored five — all in the extensions.

No Gilas player reached double-figure scoring, with Dwight Ramos putting in nine points on a terrible 4-of-16 shooting from the floor.

Veteran June Mar Fajardo had eight points and eight rebounds, Kevin Quiambao, who had 23 against the Kiwis, was limited to eight markers while Juan Gomez De Liano got seven points after dropping 23 in the previous outing for Gilas. Mike Phillips scored six and grabbed 12 boards.

Australia turned a 14-point advantage at the halftime break into almost double at the end of the third quarter with a 63-37 advantage.

The Philippines never got the chance to take the lead but kept the game close in the first three and a half minutes.

Kevin Quiambao’s three-pointer in the last 6:30 of the opening period tied it at 8.

It was all Boomers from there.

Bryce Cotton scored half of the Aussies’ 16 unanswered points, capped by a two-handed slam dunk by Angus Glover off a Gilas turnover for a 24-8 advantage with three minutes left in the opening period. The Boomers ended the quarter with a 33-14 gap.

Australia built its biggest lead at 43 on a completed three-point play by Keanu Pinder with 57 seconds left in the game.

Gomez De Liano answered with a triple before Okwera answered with a long bomb with 13 ticks left for the final count.

Cotton had 21 points on 7-of-12 field goal shooting while Tyrese Proctor added 16 for the Boomers, whose three-point shooting was limited to just 11 after raining down a World Cup Qualifier record of 24 treys in a 124-52 drubbing of Guam last Friday.

Mitch Creek and Josh Bannan added 13 and 11 markers, respectively, for Australia.