Table schema:
CREATE TABLE table_name_83 (date VARCHAR, outcome VARCHAR, score VARCHAR)

Question: 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"