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_73 (tournament VARCHAR, opponent_in_the_final VARCHAR, surface VARCHAR)
  ### Question:
  Which tournament had Toshiaki Sakai as an opponent in the final on a grass surface?
  ### Answer:
  SELECT tournament FROM table_name_73 WHERE opponent_in_the_final = "toshiaki sakai" AND surface = "grass"