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