text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_23235767_1 (surface VARCHAR, score_in_the_final VARCHAR)
  ### Question:
  What is every surface with a score in the final of 6–4, 6–7 (1–7) , 6–7 (4–7) , 4–6?
  ### Answer:
  SELECT surface FROM table_23235767_1 WHERE score_in_the_final = "6–4, 6–7 (1–7) , 6–7 (4–7) , 4–6"