Daniel Dubios and Filip Hrgovic used a previous sparring session to get the ball rolling ahead of their June 1 fight in Saudi Arabia.

They meet as part of the Queensberry vs. Matchroom 5x5 bill underneath the unified light heavyweight title fight between Artur Beterbiev and Dmitrii Bivol.

Dubois is coming off the best win of his career over Jarrell Miller in December, and Hrgovic is at the front of the queue to face the winner of the unified heavyweight contest between Tyson Fury and Oleksandr Usyk on May 18 as the IBF’s No. 1.

“I am very confident,” said the softly-spoken Dubois. “I’m working hard and ready to prove that I have changed. We had a spar a while back, and he [Hrgovic] keeps talking about that, so I want to show that people can change. I am a different animal now.”

Dubois, 20-2 (19 KOs), is now trained by Don Charles, having previously been with Martin Bowers and then Shane McGuigan.

Hrgovic seemed very relaxed about his assignment and seemingly has great confidence about June 1 based on that previous sparring session.

“I hope he has changed because the fight will last only a few rounds if he didn't change,” Hrgovic, 17-0 (14 KOs), grinned. “So I do hope he has changed because that sparring we did together was not so good for him.”

Elsewhere on the bill, there’s a light heavyweight clash between Scotland’s 17-1 (13 KOs) Willy Hutchinson and 18-3-1 (11 KOs) Craig Richards.

“I am buzzing,” said Hutchinson. “Obviously, I must say a big thank you for giving me this opportunity to be here. My confidence is through the roof, and I look forward to getting in the ring with this fella [Richards] and having a good time.”