CREATE TABLE table_name_83 (date VARCHAR(255), outcome VARCHAR(255), score VARCHAR(255))
What is the Date of the game with an Outcome of runner-up and Score of 5–7, 3–6, 6–3, 2–6?
    
SQL: SELECT date FROM table_name_83 WHERE outcome = "runner-up" AND score = "5–7, 3–6, 6–3, 2–6"