How many sets lost have a sets won less than 0?
CREATE TABLE table_name_15 (sets_lost VARCHAR, sets_won INTEGER)
SELECT COUNT(sets_lost) FROM table_name_15 WHERE sets_won < 0
### Context: CREATE TABLE table_name_15 (sets_lost VARCHAR, sets_won INTEGER) ### Question: How many sets lost have a sets won less than 0? ### Answer: SELECT COUNT(sets_lost) FROM table_name_15 WHERE sets_won < 0