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_name_30 (surface VARCHAR, outcome VARCHAR, score VARCHAR)
  ### Question:
  On what Surface was the match with a Score of 6–4, 6–3 and Runner-up Outcome played?
  ### Answer:
  SELECT surface FROM table_name_30 WHERE outcome = "runner-up" AND score = "6–4, 6–3"