CREATE TABLE table_name_7 (opponent VARCHAR2, location_attendance VARCHAR2, record VARCHAR2)

Who was the opponent when they played at Delta Center with a record of 27-13?
SELECT opponent FROM table_name_7 WHERE location_attendance = "delta center" AND record = "27-13"
SELECT "opponent" FROM "table_name_7" WHERE "27-13" = "record" AND "delta center" = "location_attendance"