The American picked up £1.5million for his role at the Barclays Center but he could comfortably pocket 10 times that amount by stepping in the ring with Joshua.
(A boxer as successful as Wilder can more or less choose his opponents.) But another way, and a more memorable one, would be to knock him out on Saturday night.
The 38-year-old Ortiz, 28-0 with 24 KOs, has no intention of doing that, nor does he plan to be intimidated against Wilder.
Wilder's opponent is Luis Ortiz, who calls himself King Kong, and who gave up an extraordinary amateur career in Cuba (he has said that his record was 343-26, though documentation is scant) in order to turn professional in America. But Ortiz proved to be a crafty counter-puncher with better boxing skills than Wilder.
This fight alone is interesting but it takes on even greater significance when you consider the big picture. "We knew we had to wear him down", Wilder said. Ortiz hit the canvas early in Round 10 after a right hand. In the other corner is 6-foot-7 Deontay Wilder, a 32-year-old who is undefeated in 39 fights, all but one of them ending in a KO.
The ninth round had more boos from the crowd but with his trademark right cocked throughout, Wilder was either appeasing the Brooklyn boxing fans or realising that maybe Ortiz's efforts were taking their toll. This is my first time watching an Ortiz bout live, and I have massive respect for him. Wilder staggered Ortiz with a right to head and then knocked him down against the ropes with another right. I showed everyone I can take a punch, was Wilders assessment of his triumphant performance. "And I was able to do that".
"I showed I am a true champion tonight". This easily was his toughest bout. He couldn't have come much closer to becoming the first Cuban heavyweight belt holder after finally getting his match with Wilder. Ortiz sat out virtually all of 2017 dealing with both a change in management and a failed drug test - his second in his career.
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He was ready Saturday, but not quite resourceful enough. He also has probably never fought anyone who punches as hard as Ortiz does. In the ring anything can happen.
Wilder couldn't finish him, and was almost finished himself two rounds later.
Either way, the Wilder knockout was not far away, despite Ortiz making the sharper start of the 10th, his left-right combination sneaking in.
Deontay Wilder has vowed to prove that he is the best heavyweight boxer, after he weighed in nearly two stone lighter than Luis Ortiz for his WBC title defence in Brooklyn on Sunday morning. That's why it took him so long to get a world title [shot].
IBF and WBA champion Joshua will attempt to add Joseph Parker's WBO title to his collection when they clash at Cardiff's Principality Stadium on March 31.
"I'm ready right now [for the Joshua-Parker winner]", Wilder said. "My goal is to unify.it seems they're in no rush to fight me because I am the baddest man on the planet". Well, I'm here and I'm ready for him.