The First Nations Black Swans have taken a major scalp, knocking off competition contenders Namibia for a comeback win to open day four of the Pacific Netball Series at Brisbane's Nissan Arena.

After a neck-and-neck, low-scoring and high intensity match the Black Swans ended 45-41 in front.

The Desert Jewells, current World no.20 and on return to Australia for the first time in three decades, sent a strong message when they handed Tonga their first loss after two undefeated, series-winning campaigns in recent years on Tuesday.

With a height and reach advantage at their disposal, Namibia looked every chance to make it three wins from four with the Black Swans struggling to connect and settle into the contest early on.

The series debutantes trailed Namibia 14-10 at the first break despite a near-perfect conversion from 11 attempts between shooters Jamaica Jauncey and Lily Cubby.

"I think they just play a unique style of play..very aerial…they look like they're not there and then they come at a really good closing speed, last minute. We knew they were going to bring it," Black Swans captain Tegan Holland said of their opponents and a tough opening patch.

A huge lift from the group got to work putting a dent in the difference early in the second quarter.

Jauncey added another 11 to her tally for the half, lightning passing from Courtney Jones continued to trouble Namibia defence switching with Kiera Heffenan from wing attack to centre, while Brook Lacey and the skipper combined for three intercepts to square the ledger at the main break.

Jayden Molo came in to contribute with six feeds and three goal assists to maintain a strong opposition response to trail by two at three quarter time, benefitted by Charlotte Ryan working her way into the quarter netting a string of late goals.

After the last change, Olivia Clark and Lily Cubby hit eight and six shots respectively as their side capitalised on their chances and periods of control towards a grinding win.

Cubby's mother in the stands told National Indigenous Times her daughter's side more than proving to be "formidable opponents" against international outfits.

"They leave it all on the court. And they just keep fighting and keep fighting... (they are) an absolute inspiration to all the young girls coming through," she said.

"You need to see it to be it, and we have lots of young First Nations girls out there that are going to see these girls and they're going to want to be this."

Final quarter hero Olivia Clark said the win ranked up there with the best she's been a part of after holding her nerve under pressure at the net.

"A lot of it's just remembering why I'm here, and just keeping myself grounded, just remembering to breathe and definitely feeling it from our like from the whole team...just our whole family and mob here supporting us, they definitely help drive that," Clark told National Indigenous Times

"It's been just amazing. Just to be here, and get to play against not only Namibia, but all these other international players is just amazing. And it's a first for all of us."

Holland also gave plaudits to defensive cohort Scarlet Jauncey, Aaleya Turner, Lacey and others swapping through in the back third for assisting in the whole-team effort.

"​​I'm just so proud of the girls for sticking out the whole 60 minutes," Holland said.

"We're just so pumped and the girls have been building all week so it's been great to finally put it out on court and gel together."

The Black Swans moved to a 3-1 record for their campaign ahead of their final round match with Samoa.

As an invitational side at the series, they are unable to contest in the third place and grand finals match, but will feature in the final day of play this Saturday.