What is the total number of sd listings where the status is quarterfinals lost to Novak Djokovic [1]?
CREATE TABLE table_27615896_18 (
    sd VARCHAR,
    status VARCHAR
)
SELECT COUNT(sd) FROM table_27615896_18 WHERE status = "Quarterfinals lost to Novak Djokovic [1]"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the total number of sd listings where the status is quarterfinals lost to Novak Djokovic [1]? ### Input: CREATE TABLE table_27615896_18 (
    sd VARCHAR,
    status VARCHAR
) ### Response: SELECT COUNT(sd) FROM table_27615896_18 WHERE status = "Quarterfinals lost to Novak Djokovic [1]"