For score 7–6 (7–3) , 6–4 please mention total number of outcome
CREATE TABLE "singles" (
  "outcome" text,
  "edition" text,
  "opponent_team" text,
  "surface" text,
  "opponent" text,
  "score" text
);
SELECT COUNT("outcome") FROM "singles" WHERE "score"='7–6 (7–3) , 6–4';