What is the Surface of the match with a Score of 2–6, 6–4, 7–6?
CREATE TABLE "doubles_9_3_6" (
  "outcome" text,
  "date" text,
  "tournament" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);
SELECT "surface" FROM "doubles_9_3_6" WHERE "score"='2–6, 6–4, 7–6';