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_13665809_2 (season INTEGER, byu_uu_score VARCHAR)

### Question ###
what is the maximum season with byu-uu score being 20–17 byu #19

### Accurate SQL ###

SELECT MAX(season) FROM table_13665809_2 WHERE byu_uu_score = "20–17 BYU #19"