How many days had a score of 4–6, 4–6?
CREATE TABLE "doubles_titles_23" (
  "outcome" text,
  "date" real,
  "tournament" text,
  "surface" text,
  "partner" text,
  "opponents_in_the_final" text,
  "score_in_the_final" text
);
SELECT COUNT("date") FROM "doubles_titles_23" WHERE "score_in_the_final"='4–6, 4–6';