text: 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_21197135_1 (opponent VARCHAR, record VARCHAR)
  ### Question:
  How many opponents were there when the record was 6-0?
  ### Answer:
  SELECT COUNT(opponent) FROM table_21197135_1 WHERE record = "6-0"