Which surfaces have the final score of 6–1, 6–7 (2–7) , 7–6 (7–5) , 7–6 (10–8)?
CREATE TABLE "singles_19_11_titles_8_runner_ups" (
  "outcome" text,
  "year" real,
  "championship" text,
  "surface" text,
  "opponent_in_the_final" text,
  "score_in_the_final" text
);
SELECT "surface" FROM "singles_19_11_titles_8_runner_ups" WHERE "score_in_the_final"='6–1, 6–7 (2–7) , 7–6 (7–5) , 7–6 (10–8)';