CREATE TABLE table_name_70 (series VARCHAR, opponent VARCHAR, date VARCHAR)

Which Series has an Opponent of @ new york rangers, and a Date of april 22?
SELECT series FROM table_name_70 WHERE opponent = "@ new york rangers" AND date = "april 22"
SELECT "series" FROM "table_name_70" WHERE "@ new york rangers" = "opponent" AND "april 22" = "date"