Tyson Fury insisted Deontay Wilder's "legacy is in bits" as he vowed to knock out his American opponent in Saturday's trilogy fight.

Wilder suffered a technical knockout defeat to Fury almost 20 months ago at MGM Grand after their drama-filled first fight in December 2018 ended with a split-decision draw.

The pair face off again at the T-Mobile Arena in Las Vegas this weekend as unbeaten Fury makes the first defence of his WBC world heavyweight title.

And Fury continued to goad his rival, who made a string of excuses for the defeat last time out – the first of his professional career – at Wednesday's final news conference.

"You're in denial and you're going to get knocked out and retire," Fury said.

"Your legacy is in bits. All the excuses, you've been destroyed. No one has believed you. They're all laughing at you like a weak piece of s***.

"You're a weak man, you're getting knocked out."

Wilder has remained largely quiet in the build-up to the high-profile bout but he eventually rose to the taunts, insisting Fury is not capable of knocking him out on Saturday.

"You don't know nothing about knocking anyone out. You don't have knockout power. You're not a knockout artist."

Responding to Wilder's "legacy" claims, Wilder said: "When you know the truth, they say the truth will set you free. 

"I have no pressure, there is nothing to lose, everything to gain.

"All the pressure is on him. Your legacy only dies when the man dies, when the desire and fire in your heart dies, when that dies so does your legacy, and I am well alive.

"We have got a lot of things in line, in order, this is what the world needs to know, there is a lot of things I could put out there, but silence is golden."

Both men were set for a traditional stare down after exchanging words, but promoter Bob Arum called it off and the boxers left the stage in opposite directions.

"At the end, we were going to do a face-off and Wilder ran away! Welcome to my world, b****," Fury later told iFL TV.