CREATE TABLE table_79659 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent in final" TEXT, "Score" TEXT, "Prize Money" TEXT)

Who was the opponent on carpet in a final?
SELECT "Opponent in final" FROM table_79659 WHERE "Surface" = 'carpet'
SELECT "Opponent in final" FROM "table_79659" WHERE "Surface" = 'carpet'