UFC president Dana White reacts to Mike Tyson vs Roy Jones Jr rule

Mike Tyson vs Roy Jones Jr is just days away, with 'Iron Mike' returning to the ring for the first time since his professional career ended with a defeat to Kevin McBride back in 2005.

Tyson vs Jones Jr is being contested as an exhibition fight, and the rules in place mean that neither fighter is allowed to knock each other out.

UFC president Dana White clearly wasn't aware of the 'No KO' rule, and his reaction when he found out at the post-UFC 255 press conference at the weekend was priceless.

"There's no knockouts? They're not allowed to knock each other out? How do you enforce that?" White asked journalists.

"I'd like to bet that doesn't happen. Can you bet on that?! Oh s***! You can't even bet on this fight?! I did not know that. I don't even know what to say to that."

The no betting rule may apply in some places, but a number of bookmakers are offering Tyson vs Jones Jr Odds.

Tyson is the 4/9 favourite at bet365, who make Jones 13/8 to be declared the winner.

For those outside of the UK, Tyson vs Jones Jr odds are also live at online betting site Melbet, where Jones is a brand ambassador.

Use the Melbet promo code NEWBONUS when opening an account to get the best possible welcome bonus - this Melbet code gives you an exclusive 130% deposit bonus rather than the 100% offer usually available.