Question: Who was the Opponent in the match with a Score of 6–3, 6–4?
SQL: SELECT "Opponent" FROM "2-16741821-3" WHERE "Score" = '6–3, 6–4';

Question: On what Surface was the match against Malek Jaziri played?
SQL: SELECT "Surface" FROM "2-16741821-3" WHERE "Opponent" = 'Malek Jaziri';