Kuerten won Roland Garros at 20, so no.
And about the 24 year old vs. "youngster", carrying the potential to be more physically superior is also completely irrelevant. I'm not going to repeat myself, so I shall leave it at that.
he was 20, nearly 21, not a teen, I should not have used the word "more" (which in my mind means "after the 20th birthday).
But I see that you've decided to refuse any reading/listening to me and arguing anyway, which is a popular method at the moment, OK let it be.