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_43 ( year INTEGER, location VARCHAR, champion VARCHAR )

### Question ###
When is the earliest year in milan that guillermo vilas was champion?

### Accurate SQL ###

SELECT MIN(year) FROM table_name_43 WHERE location = "milan" AND champion = "guillermo vilas"