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_15 (competition VARCHAR, first_match VARCHAR)
### Question:
What competition had its first match on December 20, 2007?
### Answer:
SELECT competition FROM table_name_15 WHERE first_match = "december 20, 2007"