Roy Jones Jr. thinks there's a better chance Earth will be invaded by aliens before Logan Paul knocks out Floyd Mayweather.
... actually, that might be too generous of a comparison.
Roy gave an official 0.0% probability of a Logan Paul victory -- and when he breaks it down, it's clear RJJ thinks Floyd is gonna straight-up embarrass the YouTube star.
"You're talking about the greatest defensive fighter of all time," Roy explained to TMZ Sports ... "so, it's very hard to hit him.