What date was the match against leonardo tavares with a score of 6 4, 6 4?
CREATE TABLE table_60685 (
    "Date" text,
    "Tournament" text,
    "Surface" text,
    "Opponent" text,
    "Score" text
)
SELECT "Date" FROM table_60685 WHERE "Score" = '6–4, 6–4' AND "Opponent" = 'leonardo tavares'
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 date was the match against leonardo tavares with a score of 6 4, 6 4? ### Input: CREATE TABLE table_60685 (
    "Date" text,
    "Tournament" text,
    "Surface" text,
    "Opponent" text,
    "Score" text
) ### Response: SELECT "Date" FROM table_60685 WHERE "Score" = '6–4, 6–4' AND "Opponent" = 'leonardo tavares'