What is the Opponent of the match played on a Clay Surface with a Score of 6–0, 6–2?
CREATE TABLE "singles_titles" (
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent_in_the_final" text,
  "score" text
);
SELECT "opponent_in_the_final" FROM "singles_titles" WHERE "surface"='clay' AND "score"='6–0, 6–2';