Anthony Joshua will face an American opponent for the second successive fight when he makes a first defence of his IBF world heavyweight title against Dominic Breazeale on June 25.
The Briton won the belt with a two-round demolition of Breazeale's (17-0, 15 KOs) countryman Charles Martin earlier this month and once again has home advantage at the O2 Arena in London.
There are sure to be harder tests for Joshua ahead, such as against his rival world champions Tyson Fury or Deontay Wilder, as well as David Haye.
Joshua (16-0, 16 KOs) has stopped all but one opponent within three rounds and will be the overwhelming favourite against Breazeale, who was knocked down by Amir Mansour in his last fight in January.
But the challenger is unbeaten with 15 stoppages in 17 wins and will have a slight height advantage over 6-foot-6 Joshua, who is promising an explosive fight before facing one of his rival world champions.
"My coaches have watched Breazeale for a long time and they knew he was going to be a player in the division and now we get the chance to go war on June 25," Joshua said.
"It's sure to be explosive, both of us like to let our hands go and score knockouts, we are both undefeated and both have Olympic pedigree.
. @anthonyfjoshua 16-0 (16 KO's) will face Dominic Breazeale 17-0 (15 KO's) in the first defence of his IBF World title @TheO2 June 25 🇬🇧🇺🇸👑
— Eddie Hearn (@EddieHearn) April 25, 2016
"I am looking to get passed Breazeale in style and continue moving towards the unification fight everybody is waiting for.
"I'm looking forward to being part of a stacked night of boxing and defending my title in style."
Breazeale is a 30-year-old former NFL player, who played quarter-back for the University of Colorado, and competed in the same super-heavyweight competition at the 2012 Olympics where Joshua won gold. Breazeale went out in the preliminary round.
Joshua's biggest threat could be attracting UK pay-per-view subscribers for a fight which takes place on a night when England and Wales could both be in action at Euro 2016.
Britons George Groves and Martin Murray will fight in an eliminator for the WBA world super-middleweight title on the undercard.
"I've had some huge profile fights all over the world in Golovkin, Martinez and Abraham but never had the big one in the UK," said Murray, a three-time world title challenger at middleweight.
"This is a fight that British fight fans can really get their teeth into and I'm looking forward to getting the win and moving on to challenging for the world title later in the year."
Groves, who was beaten by WBC champion Badou Jack last year, said: "Martin is the perfect fight for me at this stage.
"He's a seasoned campaigner, who's boxed at the highest level for quite some time. He is a world level opponent and I'll have to be fully focused and prepared to beat him."