When was the earliest year that Guillermo Vilas was the runner-up?
CREATE TABLE table_name_9 (
    year INTEGER,
    runner_up VARCHAR
)
SELECT MIN(year) FROM table_name_9 WHERE runner_up = "guillermo vilas"
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: When was the earliest year that Guillermo Vilas was the runner-up? ### Input: CREATE TABLE table_name_9 (
    year INTEGER,
    runner_up VARCHAR
) ### Response: SELECT MIN(year) FROM table_name_9 WHERE runner_up = "guillermo vilas"