And who know, did Mark Hilton (who beat Costa) officially finish career in 2006? he has played 2 R1 of Futeres in doubles this year after 6 years of absence.
I have another answer for question №8!
It doesn't say "Inactive" in his profile, and he played some tournaments this year.. so technically he's active IMO. My answer to #8 is still wrong though.
Why do you not accept 2 answers for 1 question? It doesn't hurt anyone..