Demetrius Andrade will defend his WBO world middleweight title against Maciej Sulecki on Saturday June 29, live on Sky Sports.
Andrade defends his title for the second time in his first hometown show having beaten Artur Akavov in January, and becoming a two-weight world ruler in October with a victory over South African Walter Kautondokwa.
On facing Sulecki at the Dunkin Donuts Center in Rhode Island, Andrade said: "He is one of the top guys in the division, and his only loss is to Daniel Jacobs, in a fight where he gave Danny problems.
"You can't overlook this guy. He has earned this shot, and I am expecting him to bring it.
"That being said, I am the best 160-pounder in the sport, and I plan on showing every single aspect of that come June 29. This is my time."
The 31-year-old also called out Saul 'Canelo' Alvarez after the Mexican beat Daniel Jacobs in their unification bout in Las Vegas last night.
Andrade said: "After tonight, there is one guy with three of the belts, and I've got the fourth."
"Alvarez has been very vocal about wanting to unify after this fight, so let's make it happen.
"We all feel that we are the best in the division, and there is only one way to find out."