Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_30 (opponent VARCHAR, week VARCHAR, game_site VARCHAR)
### Question:
Who was the opponent at the game at Sullivan Stadium before week 11?
### Answer:
SELECT opponent FROM table_name_30 WHERE week < 11 AND game_site = "sullivan stadium"