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_20745754_1 (opponent VARCHAR, _number VARCHAR)

### Question ###
Who did they play against in game 7?

### Accurate SQL ###

SELECT opponent FROM table_20745754_1 WHERE _number = "7"