When the  score in the final is 3–6, 6–4, 3–6, 4–6, who are all the opponents in the final?
create table table_26202847_6 (opponent_in_the_final varchar, score_in_the_final varchar, PRIMARY KEY (opponent_in_the_final))
select opponent_in_the_final from table_26202847_6 where score_in_the_final = "3–6, 6–4, 3–6, 4–6"