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_17120964_9 (opponent VARCHAR, date VARCHAR)
### Question:
who was the opponent where the date was the 21st?
### Answer:
SELECT opponent FROM table_17120964_9 WHERE date = "21st"