The 32-year-old Wilder delivered an explosive performance as he floored Stiverne two times in the opening round before finishing it off with a punishing right-left to the head as the defenceless challenger was pinned against the ropes.
Stiverne, of Canada, then slumped to the canvas and stayed motionless for some time before being helped up and into a chair where he was examined by the ring doctor at the Barclays Center arena in New York.
“I know I am the best. I just want to prove that I am the best,” said Wilder.
Wilder was the heavy favourite going into the fight as he improved to 39-0 with 38 knockouts in the sixth defence of his title.
It was his second win over the 39-year-old Stiverne who came into the rematch 15 pounds heavier and had fought just once since losing to Wilder in January 2015.
Wilder hopes this win will land him a super fight with Anthony Joshua in a heavyweight showdown the boxing world is dying to see.
British star Joshua is the reigning IBF and WBA heavyweight champ.
On the undercard, Kazakhstan’s Sergey Lipinets claimed the vacant IBF junior welterweight title with a unanimous decision victory over Akihiro Kondo of Japan.
Lipinets improved to 13-0 with 10 KOs as he won on all three judges’ scorecards, 118-110, 117-111 and 117-111.
Kondo, the third ranked challenger with a career record of 29-6-1 coming into the bout, was fighting for his first world title in his debut fight on American soil.
Source : timesofindia