Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_25 ( year_born VARCHAR, position VARCHAR, current_club VARCHAR )

### Question ###
What year was the Guard who currently plays for the Memphis Grizzlies born?

### Accurate SQL ###

SELECT year_born FROM table_name_25 WHERE position = "guard" AND current_club = "memphis grizzlies"