TESTING JAKE'S CHIN TMZSports.com
Roy Jones Jr. wants to do what Mike Tyson couldn't ... test Jake Paul's chin in the boxing ring!
That's exactly what the 55-year-old legend told Babcock on the TMZ Sports TV show (airs nightly on FS1) ... weeks after the former champion called the fight Jake and Mike fight for Netflix -- watched by over 100 million people.
"I don't think Mike checked his chin at all," RJJ said.