CREATE TABLE table_name_97 (opponent VARCHAR2, week VARCHAR2, date VARCHAR2)

Who was the opponent of the game before week 11 on October 31, 1976?
SELECT opponent FROM table_name_97 WHERE week < 11 AND date = "october 31, 1976"
SELECT "opponent" FROM "table_name_97" WHERE "date" = "october 31, 1976" AND "week" < 11