The Warriors have become the first team to beat Brisbane in NRLW history as they kept their own finals hopes alive with a 10-8 win at the SCG.
In a thrilling finish on Saturday, the Warriors sprinted to a 10-0 halftime lead before they held off a fast-finishing Broncos.
It means they will qualify for the grand final if St George Illawarra are beaten by Sydney Roosters in Sunday’s stand-alone match at Leichhardt Oval.
Meanwhile the narrow loss also guaranteed Brisbane a spot in their second straight decider, while the Roosters are officially out of contention.
Front-rower Annetta Nuuausala was the star for the Warriors, giving them a vital try just before the break to take their lead from four to 10.
After Georgia Hale and Atawhai Tupaea put Madison Bartlett over to open the scoring early, Nuuasusala worked her magic.
The steam-rolling prop carried four Broncos across the line to score, as the sister of former NRL player Frank Paul finished with a game-high 101 metres and five tackle busts.
Brisbane weren’t going to suffer their first loss quietly though.
While the Warriors held on close to their line throughout the first half, the Broncos hit back immediately in the second when centre Amy Turner helped Tamika Upton cross on the wing.
Turner was in the action again moments later when she ran onto a Rona Peters offload to cross, only for Chelsea Baker’s conversion attempt to hit the post.
It proved crucial, as the Warriors’ defence held firm for the final 17 minutes to keep their season alive.