What is the Date of the Tournament with a Score of 3–6, 7–6(6), 5–7?
CREATE TABLE "runners_up" (
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent" text,
  "score" text
);
SELECT "date" FROM "runners_up" WHERE "score"='3–6, 7–6(6), 5–7';