Which Outcome has a Score of 6–4, 2–6, 6–3?
CREATE TABLE "singles_30_15_15" (
  "outcome" text,
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent" text,
  "score" text
);
SELECT "outcome" FROM "singles_30_15_15" WHERE "score"='6–4, 2–6, 6–3';