CREATE TABLE table_57815 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent in the final" TEXT, "Score" TEXT)

Who is the opponent in the final on a hard surface with a score of 6 3 7 6(5)?
SELECT "Opponent in the final" FROM table_57815 WHERE "Surface" = 'hard' AND "Score" = '6–3 7–6(5)'
SELECT "Opponent in the final" FROM "table_57815" WHERE "Score" = '6–3 7–6(5)' AND "Surface" = 'hard'