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_22597626_2 (surface VARCHAR, opponents_in_the_final VARCHAR)

### Question ###
What is the surface made of if the opponent in the final is Hewitt McMillan?

### Accurate SQL ###

SELECT surface FROM table_22597626_2 WHERE opponents_in_the_final = "Hewitt McMillan"