Which surface has an Opponent of fernando verdasco?
CREATE TABLE table_name_41 (
    surface VARCHAR,
    opponent VARCHAR
)
SELECT surface FROM table_name_41 WHERE opponent = "fernando verdasco"
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: Which surface has an Opponent of fernando verdasco? ### Input: CREATE TABLE table_name_41 (
    surface VARCHAR,
    opponent VARCHAR
) ### Response: SELECT surface FROM table_name_41 WHERE opponent = "fernando verdasco"