CREATE TABLE table_75253 ("Game" FLOAT, "Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Series" TEXT)

Which Series has an Opponent of calgary flames, and a Score of 9 4?
SELECT "Series" FROM table_75253 WHERE "Opponent" = 'calgary flames' AND "Score" = '9–4'
SELECT "Series" FROM "table_75253" WHERE "Opponent" = 'calgary flames' AND "Score" = '9–4'