question: What was the championship that had final score of 6–2, 5–7, 6–4, 6–2 and was on a clay surface?
answer: SELECT championship FROM table_name_41 WHERE surface = "clay" AND score_in_the_final = "6–2, 5–7, 6–4, 6–2"
context: CREATE TABLE table_name_41 (championship VARCHAR, surface VARCHAR, score_in_the_final VARCHAR)