CREATE TABLE table_69752 ("Outcome" TEXT, "Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent" TEXT, "Score" TEXT)

What date was the match on a clay surface against Andrea Hlav kov ?
SELECT "Date" FROM table_69752 WHERE "Surface" = 'clay' AND "Opponent" = 'andrea hlaváčková'
SELECT "Date" FROM "table_69752" WHERE "Opponent" = 'andrea hlaváčková' AND "Surface" = 'clay'