CREATE TABLE table_48186 ("Outcome" TEXT, "Year" FLOAT, "Championship" TEXT, "Surface" TEXT, "Opponent" TEXT, "Score" TEXT)

What is the lowest Year, when Surface is Hard, and when Opponent is Dinara Safina?
SELECT MIN("Year") FROM table_48186 WHERE "Surface" = 'hard' AND "Opponent" = 'dinara safina'
SELECT MIN("Year") FROM "table_48186" WHERE "Opponent" = 'dinara safina' AND "Surface" = 'hard'