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_14594528_6 ( name__alma_mater_ VARCHAR, wins VARCHAR )

### Question ###
What coach had 15 wins?

### Accurate SQL ###

SELECT name__alma_mater_ FROM table_14594528_6 WHERE wins = 15