The former Liverpool defender played alongside Ronaldo at Sporting Lisbon before he moved to Manchester United.
And Babb knew that Ronaldo, who would have been 14 or 15 at the time, was pure class.
When Ronaldo embarrassed him in training, the London-born defender made the decision that the upstart would not get past him the next time.
He told the Fantasy Football Club: “We’re doing the training season and it’s attack vs defence.
“So, all the attackers are coming at you. This little kid runs at me. Steps over once, twice, three times, goes past me and sticks it in the top bin.
“All the lads are like, ‘Babbsy he’s had you off’ and all that like.
“So, the next time he’s coming at me… step over one way, step over the next.
"He shoots past me so I forearm chop him. I knock him out.
“So Ronaldo's on the floor and I’m like ‘no more’ or something like that.
“He’s looking at me. He doesn’t know what has happened. All lads... the training ground’s gone quiet.
“Needless to say he went over the other side [of the pitch] and never came back.”
