What was the surface of the score of 7–5, 3–6, 7–6?
CREATE TABLE "futures_and_challengers_singles_titles" (
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent" text,
  "score" text
);
SELECT "surface" FROM "futures_and_challengers_singles_titles" WHERE "score"='7–5, 3–6, 7–6';