Question: What is Score, when Date is May 7, 2006?
SQL: SELECT "Score" FROM "2-1723598-4" WHERE "Date" = 'May 7, 2006';

Question: What is Surface, when Opponents In The Final is "Christophe Rochus Olivier Rochus"?
SQL: SELECT "Surface" FROM "2-1723598-4" WHERE "Opponents in the final" = 'Christophe Rochus Olivier Rochus';

Question: What is Tournament, when Surface is "Hard"?
SQL: SELECT "Tournament" FROM "2-1723598-4" WHERE "Surface" = 'Hard';

Question: What is Score, when Partnering is "Alexander Waske", and when Opponents In The Final is "Rafael Nadal Bartolomé Salvá-Vidal"?
SQL: SELECT "Score" FROM "2-1723598-4" WHERE "Partnering" = 'Alexander Waske' AND "Opponents in the final" = 'Rafael Nadal Bartolomé Salvá-Vidal';