Why do you hate Ferrer so much?
How many slams will Del Potro win?
Boring gamestyle and overall attitude, systematically praying on weak fields in MM tournaments, overhyped by some as better than players who have achieved far more than he has despite being younger, etc...
As for Del Potro, I have no idea how many Slams he will win, it depends on many factors, namely on his ability to stay healthy/fit for a prolonged period, which is always in doubt. I do hope he can win at least another one though and I think he's capable of it. I'm going with 2.
what was the first tennis match you saw ?
The first match I remember watching in full was the 2000 US Open final with Safin beating Sampras
If you mean live in the court, Djokovic vs Gasquet in the 2007 Estoril Open final.
Is the name of the 1st man ever to complete a voyage around the world known in Portugal, or do everyone there just say "Magellan" as most of the rest of the world does, despite him dying before the trip was completed?
Yup, his actual name is Fernão de Magalhães. 'Magellan' is a frankly failed name translation attempt, as names should never be translated.
Who is 'Mark Lenders'?
Character from Captain Tsubasa, a Japanese anime and manage
Unless you mean who is Mark as in who am I, in which case I will reply later