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_88 (against INTEGER, played VARCHAR, drawn VARCHAR, difference VARCHAR)

### Question ###
What is the average Against when the drawn is more than 2 and the Difference of- 17, and a Played smaller than 20?

### Accurate SQL ###

SELECT AVG(against) FROM table_name_88 WHERE drawn > 2 AND difference = "- 17" AND played < 20