JAKE PAUL promised to send ex-NBA star Nate Robinson "back to retirement" as he ramped up his training for the fight.
The YouTube star faces Robinson next Saturday on the undercard of Mike Tyson's boxing comeback.
Videos shared online revealed Paul working on the pads with his trainer BJ Flores, a former cruiserweight contender.
The 23-year-old was captured drilling body shots and uppercuts in his preparation for the bout.
Paul made his professional debut in January, stopping internet rival 'AnEsonGib' in one round.
Robinson, who has not played in the NBA since the 2015-2016 season, is boxing for the first time.
Paul has given his opponent little chance of success in the ring or of ever fighting again after their co-headliner.
He posted on Instagram: "Sending @naterobinson back to retirement November 28th."
Paul admits to overlooking Robinson, 36, as he called for bigger fights in the future.
That includes UFC pair Conor McGregor, 32, and Jorge Masvidal, 36.
Paul told the Mayweather Boxing Channel: "I want to prove to people that I'm a legitimate boxer, legitimate professional boxer with skill and someone that people should be scared of.
"I have knockout power, I'm dangerous, and to me that's super important and again, that's just going to take multiple fights to prove that.
"I want to fight the biggest names in the sport, I want to take UFC fighters like Ben Askren, like Masvidal, whoever it is and bring them over to boxing, put them in a ring and go head-to-head with them.
"I want to fight Conor McGregor eventually. Whoever wants to get in the boxing ring with me, I want to be able to do it and beat them."
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