Michael Hunter set his sights on the stars of the heavyweight division after stopping Fabio Maldonado in two rounds in the early hours of Sunday morning.
Hunter handed Maldonado his first stoppage defeat in 29 fights to retain his WBA international title at the MGM National Harbor in Maryland.
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The American, who was on the short-list to face Anthony Joshua before Andy Ruiz Jr was confirmed for the June 1 defence, called out the three-belt champion after securing his fourth straight knockout win.
“Mandatory, any chance that I can get, I’m taking it. I’m here and I’m here to stay,” said Hunter.
“Anthony Joshua, he’s the cash cow, you know what I’m saying. It’s an easy fight to make, we’re both with DAZN and Matchroom.
“Dillian Whyte, we want Dillian Whyte, we want a mandatory.”
Hunter, whose sole defeat in 18 contests was on points to Oleksandr Uysk at cruiserweight in 2017, used the opening round to try and find a way through his opponent’s tight guard.
The 30-year-old staggered his man at the start of the second with a heavy uppercut and forced a standing count before sending the Brazilian veteran to the canvas with clubbing hooks.
Maldonado, 39, made it to his feet but after being caught by further heavy blows and turning his back the referee called a halt.
Filip Hrgovic impressed on his American debut after taking just one minute to blow away Gregory Corbin and retain his WBC international heavyweight title.
The Croatian floored Corbin with a clubbing right hook in the opening round after the American came swarming forward.
Corbin beat the count but was unsteady on his feet and the referee decided he was unable to continue.
“We didn’t have time to see the best of Hrgovic. But I’m looking forward to big fights, strong opponents and to give the USA fans great fights,” Hrgovic said after taking his record to eight straight wins.
“I will face anyone, anytime in heavyweight division.”
Jessica McCaskill unified the super-lightweight titles after securing a unanimous decision over Anahi Esther Sanchez.