FLOYD MAYWEATHER SR claims to have no idea who KSI is - despite TRAINING the YouTuber last year for his first Logan Paul fight.
Internet star KSI - real name Olajide Olayinka Williams or "JJ" - beat rival Paul on their professional boxing debuts in Los Angeles last weekend.
But the pair fought to a draw in an exhibition bout last year, and the Brit, 26, spent time in Floyd Jr’s gym in Las Vegas and filmed a session with Mayweather Sr.
In the rematch KSI had Mayweather Sr’s brother Jeff as one of his coaches.
And Jeff checked in on Floyd Jr’s dad and ex-trainer to ask him how he thought KSI had developed from the first bout last year - but Sr had no clue who either YouTuber was.
Jeff asked: "Did you see the fight at the weekend? KSI vs Logan Paul?”
Mayweather Sr replied: “KI... Logan Paul?”
Jeff replied: “You used to train KSI, I know you remember that.
“But still, Logan Paul says he wants to fight you.”
A puzzled Mayweather Sr said: “Who? So what happened? What did he say?”
Jeff revealed Paul called out his brother, and explained: “He said he wants you after that fight?”
But the 67-year-old did not know about the YouTube bout, as he said: “After what fight?”
Jeff replied: “The one he lost at the weekend, to KSI.”
To which Mayweather Sr questioned: “Who is KSI?”
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Jeff laughed to the camera, and said: “He trained him, too! And he just can’t remember!”
But not backing down from a challenge, Mayweather Sr said: “Look, man you better stop talking s*** before a mother f***er get knocked out cold.
“Hey if he want it, he can get it! Anyone that want it can get it."