Tszyu (11-0, 9 KOs, 1 NC) is set to return on May 6 to take on Spaniard Oscar Diaz (16-0, 6 KOs) in a 10-round junior middleweight bout to headline a No Limit Boxing show at the Newcastle Entertainment Centre in Australia.

“We’re breaking into the world stage now, taking on an international opponent, and we’re at the point where we need more experience,” Tszyu said in a statement. “There’s a lot of attention around me, but not enough experience yet, so we need to lift that.

“I know enough about Diaz to understand how I need to approach the fight and what I need to do to win. The Newcastle crowd is always rowdy. There’s some kind of energy that flows through here. It feels pure Australian out here, and I love that.”

Tszyu, 28, fought Zerafa on January 16. The bout ended anticlimactically in the third round following an accidental clash of heads. Zerafa told the doctor that he could not see due to the foul, and the bout was ruled a No Contest.

Diaz, a 25-year-old from Andalucia, has fought exclusively in Spain throughout his seven-year career.

“Nikita is one of the fastest-rising names in Australian boxing and every time he fights, he keeps forcing his way higher up the world rankings,” No Limit Boxing head George Rose said in a statement. “He’s unbeaten, he’s exciting, he’s dangerous, and this is another huge chance for him to keep building toward the biggest fights in the division.

“There’s no question the Zerafa fight left a bad taste. It ended in controversy, it ended in frustration, and it denied Nikita the type of statement he was ready to make. That’s why this return is so exciting. He’s hungry, he’s motivated, and he wants to remind everyone exactly who he is.”

Tszyu is the younger brother of Tim Tszyu and son of Hall of Famer Kostya Tszyu.