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_99 (opponents VARCHAR, surface VARCHAR)
  ### Question:
  Who did he play on a hard surface?
  ### Answer:
  SELECT opponents FROM table_name_99 WHERE surface = "hard"