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_15893020_2 (maidens INTEGER, best_bowling VARCHAR)

### Question ###
What is the highest number of maidens when the bowling best was 1/13?

### Accurate SQL ###

SELECT MAX(maidens) FROM table_15893020_2 WHERE best_bowling = "1/13"