CREATE TABLE table_name_17 (surface VARCHAR, score VARCHAR)
SELECT surface FROM table_name_17 WHERE score = "6–4, 2–6, 3–6"
Surface คืออะไรเมื่อคะแนนคือ 6–4, 2–6, 3–6
What was the Surface when the Score was 6–4, 2–6, 3–6?