Name the number of partners for 5-7, 6-7 (5-7)
CREATE TABLE "doubles_7_2_titles_5_runners_up" (
  "outcome" text,
  "year" real,
  "championship" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);
SELECT COUNT("partner") FROM "doubles_7_2_titles_5_runners_up" WHERE "score"='5-7, 6-7 (5-7)';