Nathan Cleverly will defend his WBA world light heavyweight title against Badou Jack on the undercard of Floyd Mayweather v Conor McGregor.
Cleverly defeated hometown champion Juergen Braehmer last October to pick up the WBA title and will be making his first defence against Jack, who steps up a weight after a two-year reign as WBC super middleweight champion.
Mayweather v McGregor
When is it? Saturday August 26
Where? T-Mobile Arena, Las Vegas
What channel is it on in the UK? Sky Sports Box Office
Big fight card
Floyd Mayweather Jr (1/6) v Conor McGregor (9/2) - light middleweight
Gervonta Davis v Francisco Fonseca - super featherweight
Nathan Cleverly v Badou Jack - light heavyweight
Savannah Marshall v TBD - super middleweight
Shawn Porter v Thomas Dulorme - welterweight
Cleverly said: "This is a fight I have wanted ever since Badou Jack moved to light heavyweight and I'm delighted to fight in Vegas on an event like this. I've trained long and hard for this fight and I'm ready to be let off the leash. This is the biggest fight of my career so far and I'm going to do a number on Badou Jack on August 26.
"I'm thankful for this opportunity and I’m excited about getting another shot at a world title,” said Jack. “To be a part of this event and fighting on this card is historic. Nothing beats it. I’m excited to get back in the ring. I’m getting ready to take that belt, and win a title in my second weight class.
"The biggest difference between past training camps and preparing for this fight is the fact that I was training to get the weight down, now I’m training to build muscle and perfect my boxing strategy. This will be a tough fight, but I don’t see any issues getting through it. I feel confident and fans can expect a win by knockout or decision. He’s not leaving with that belt. It’s staying right here in Las Vegas."
Promoter Eddie Hearn said: "I'm delighted to get this fight made - it's a great fight on a huge night of boxing. Cleverly vs. Jack have styles that will gel into an all action fight and we are confident our man will be returning with the belt."
Gervonta Davis' second defence of his IBF super featherweight title against undefeated challenger Francisco Fonseca has also been added to the Mayweather vs. McGregor card as the 22 year old looks to continue his reign as America’s youngest current world champion.