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_12321870_32 (player_name VARCHAR, period VARCHAR)
### Question:
What is the name of the player who played in 2009 only?
### Answer:
SELECT player_name FROM table_12321870_32 WHERE period = "2009"