CREATE TABLE table_4582 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" TEXT)

Who has a round of 3 with a method of decision?
SELECT "Opponent" FROM table_4582 WHERE "Round" = '3' AND "Method" = 'decision'
SELECT "Opponent" FROM "table_4582" WHERE "Method" = 'decision' AND "Round" = '3'