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_80 (points INTEGER, against VARCHAR, played VARCHAR)

### Question ###
What is the lowest Points when against is 50, and there are less than 20 played?

### Accurate SQL ###

SELECT MIN(points) FROM table_name_80 WHERE against = 50 AND played < 20