Deontay Wilder has confirmed he will take on Luis Ortiz in a heavyweight rematch.
Wilder beat Ortiz in March 2018 with a tenth-round knockout.
There had been calls for the unbeaten American to face off against Tyson Fury in a rematch but the Brit pulled out of talks.
A stunning showdown with Anthony Joshua was also mooted but Wilder is tipped to take on Ortiz in September.
“To all my fans, I want to announce that Luis Ortiz and I have signed for a rematch, with the date and site to be announced shortly. All my controversial fights Must get dealt with ASAP,” Wilder tweeted.
Wilder knocked out Dominic Breazeale in the first round earlier this month to retain his heavyweight world title.
He later said he was committed to making the fight with fellow champion Joshua.
But he has opted to take on Ortiz in a rematch, although an announcement on fights against Brits Joshua and Fury could also arrive in the coming weeks.
After his victory, Wilder said of the Joshua unification: “It will happen, I’m going to cut to the chase. The heavyweight division is lit right now and it’s our obligation to make it happen.
“The next time it comes around to discussing it, I think the deal will get done.
“People have to have patience but it will happen, I promise you that.”
Joshua will put his unbeaten record on the line this weekend in New York when he takes on Andy Ruiz Jr.
Fury meanwhile will meet Tom Schwarz next month with an all-British showdown against Dillian Whyte on the cards.