How many opponents were there when the record was 6-0?
CREATE TABLE table_21197135_1 (opponent VARCHAR, record VARCHAR)
SELECT COUNT(opponent) FROM table_21197135_1 WHERE record = "6-0"
### 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"