Oleksandr Usyk: What makes unified heavyweight world champion so good and can kickboxer Rico Verhoeven beat him?

Rico Verhoeven is taking on the trickiest challenge in heavyweight boxing, fighting Oleksandr Usyk, and trying to do it when transitioning from another sport.

Holland's Verhoeven is the world's leading heavyweight kickboxer, who dominated the Glory promotion for over a decade. But he's only had one prior boxing bout and on May 23 will challenge Usyk for the Ukrainian's WBC title.

Jonathan Haggerty, the ONE Championship bantamweight world titlist, is a British kickboxing superstar. He believes Verhoeven deserves the chance to box Usyk, even though the odds are stacked against the Dutchman.

"It's something that I would like to do, it's good to see other people doing it," Haggerty said of the crossover bout.