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_81 ( worst_score INTEGER, best_dancer VARCHAR, dance VARCHAR )

### Question ###
What is the average Worst score for Mario Lopez as the Best dancer and Tango as the Dance?

### Accurate SQL ###

SELECT AVG(worst_score) FROM table_name_81 WHERE best_dancer = "mario lopez" AND dance = "tango"