How many Sets did Gary Muller have?
CREATE TABLE table_name_21 (sets VARCHAR, player VARCHAR)
SELECT COUNT(sets) FROM table_name_21 WHERE player = "gary muller"
### Context: CREATE TABLE table_name_21 (sets VARCHAR, player VARCHAR) ### Question: How many Sets did Gary Muller have? ### Answer: SELECT COUNT(sets) FROM table_name_21 WHERE player = "gary muller"