Tim Tszyu's swipe at dad Kostya after Takeshi Inoue fight

Tim Tszyu put on a brutal masterclass against highly-rated Takeshi Inoue on Wednesday night and the Australian couldn't help but call out his father after the bout.

Tszyu underlined his world-title credentials once against with a unanimous points victory over Inoue in the pair's high-stakes super-welterweight showdown in Sydney.

'VERY DOUBTFUL': Paul Gallen's bug snub for Sonny Bill Williams

'AM I GOOD': Footage emerges of Canelo and Plant's mid-fight exchange

Rising to the occasion for his riskiest and sternest test yet, Tsyzu prevailed after 12 tough rounds to improve his undefeated professional record to a 20-0 - 15 by TKO.

Tszyu won every round on all three judges' scorecards with one judge handing him a 10-8 round in the final for a 120-107 ruling.

While there were some critics disappointed Tszyu wasn't able to get the finish against his stoic opponent, the young fighter was already thinking ahead.

Earlier in the week, his father Kostya Tszyu - a former world champion and boxing Hall of Famer - had expressed his desire for Tszyu to fight in country of birth, Russia.

Tszyu's popularity is rising in Russia as his rise to the top of the welterweight division gathers momentum.

And after defeating Inoue, Tszyu called out his father to make the dream happen.

“My dad keeps talking about it,” Tszyu said to Main Event after the bout.

“Dad if you’re listening, you’ve to organise something,” Tszyu joked.

“He keeps talking it up. You’ve got to actually do some work.”

Broadcaster Paul Kent said he thinks his world title fight will take place in Las Vegas, before he returns to Australia to defend the belt if he is successful.

Tim Tszyu cements No.1 contender position

While he was unable to record a 16th knockout win against the Japanese warrior, Tszyu was never in doubt of getting the nod from the judges after leaving Inoue battered and blue.

Tszyu praised his opponent after the fight, who was bullied around the ring, who continued to throw until the final bell.

"The guy is built like a brick wall. I hit him with everything and he wouldn't go down. I don't think a heavyweight could drop him. What a warrior," Tszyu said.

"I heard him squeal like 20 times and he wouldn't go down. I didn't feel s**t, I was just having a good time in all honesty.

"That was the best thing that could have happened, 12 rounds before the big time.

"I'll be back in the gym, I need to take these guys out."

Tszyu was already the mandatory challenger for Brian Castano's belt.

Castano has belittled Tszyu's credentials in the past and said he needed to fight outside of Australia before challenging him.

But Tszyu's emphatic defeat over Inoue will all but cement his spot as the next bout for the Argentine.

Click here to sign up to our newsletter for all the latest and breaking stories from Australia and around the world.