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_21063459_1 (opponent VARCHAR, record VARCHAR)

### Question ###
Who did the team play against when a record of 3-1, #16 was achieved?

### Accurate SQL ###

SELECT opponent FROM table_21063459_1 WHERE record = "3-1, #16"