Deontay Wilder sent a message to Anthony Joshua with his emphatic first-round knockout of Bermane Stiverne at the Barclays Center in Brooklyn, New York on Saturday night.
The Bronze bomber had floored him opponent three times before the referee stepped in and said enough is enough.
The Canadian Stiverne was the only man to ever take Wilder the distance in his 38 previous professional fights prior to the bout, but it took the American just 2:59 to put him away this time.
Wilder now has a record of 39 fights with 38 knockouts and is still the reigning WBC heavyweight champion of the world.
But, who has he really fought?
Wilder has 19 knockouts in the first-round of his fights, but this was his first stoppage inside the opening round in over three-and-a-half years and seven fights.
Many boxing fans have speculated that Wilder, 32, would not cope well with the very top names in the business, names like Anthony Joshua, David Haye, Tyson Fury and Wladimir Klitschko, primarily because of his brawling style.
As you can see from the video below, although Wilder's KO on Stiverne was deadly, it was far from graceful:
Straight after the fight, Wilder made it clear he wanted AJ in 2018.
"I've been waiting on the fight for a long time, listen 'AJ', I declare war on you. Do you accept my challenge?
"I've been waiting for a long time. I know I'm the champion, I know I'm the best, are you up for the test?"
Matchroom Boxing promoter Eddie Hearn seems to have been trying to secure another client of his a big fight against Wilder before he lets the American at Joshua.
"They are trying to give me a peasant in [Dillian] Whyte but I want the king Joshua.
"A king doesn't chase a peasant, I don't chase peasants, I want Joshua. If Joshua doesn't give me that fight then we have other routes."
Still, Wilder rightly believes the world wants to see a unification bout between Wilder and Joshua and he's made it clear to his British counterpart the offer is on the table.
"The world wants the Joshua fight, come and see me baby, no more hiding, ducking, dodging, no more excuses, I know I'm the best.
"Let's make the fight happen, I know I'm the best, are you up for the test?
"I will go anywhere in the world. I was going to go to Russia [to face Alexander Povetkin], I will go to England as well."
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