Tai Tuivasa has claimed the biggest scalp of his burgeoning mixed martial arts career, but fellow Australian Megan Anderson suffered a loss in her UFC debut in Chicago.
Sydneysider Tuivasa was taken the distance for the first time but toughed out a unanimous points win over former heavyweight champion Andrei Arlovski of Belarus at UFC 225.
US-based Queenslander Anderson was unanimously outpointed in her featherweight bout by former bantamweight world champion Holly Holm.
Tuivasa extended his MMA record to 10-0 and his UFC log to 3-0.
He had never been taken beyond the first round and didn't have things all his own way despite landing several strong right-hand blows and a few more total strikes than Arlovski.
Tuivasa was marked on his face in the first round and blood streamed from his nose in the third as Arlovski also landed some good strikes.
All three judges scored the fight 29-28 to the Australian.
"I'm pretty happy with that performance," Tuivasa said.
"Obviously I was coming out for the knockout but sometimes it doesn't happen, especially against a tough opponent like that."
He celebrated by drinking beer from a shoe.
There were no celebrations for Anderson, as the more experienced Holm dictated terms for most of the bout against the taller and bigger-bodied Australian.
Each woman landed a strong kick to the head in the first round, which featured a lot of close quarter work from both fighters.
Holm dominated the second round, landing numerous strikes after taking Anderson to the ground.
Anderson snapped Holm's head back and sent her backwards with a strong straight right in the opening seconds of the third, but wasn't able to capitalise.
Holm quickly regained control, again taking Anderson to the ground and pounding her with numerous blows.
Two judges gave Holm the fight 30-26 and their colleague scored it 30-27.