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_15621965_18 (no VARCHAR, position VARCHAR, school_club_team VARCHAR)
  ### Question:
  WHAT WAS THE JERSEY NUMBER OF THE ROSTER PLAYER FROM OKLAHOMA STATE WHO PLAYED GUARD?
  ### Answer:
  SELECT no FROM table_15621965_18 WHERE position = "Guard" AND school_club_team = "Oklahoma State"