Who was the Finalist on a Hard Surface with Winner Serena Williams 6–1, 6–7(7), 6–3?
CREATE TABLE "singles" (
  "tournament" text,
  "surface" text,
  "week" text,
  "winners" text,
  "finalists" text,
  "semifinalists" text
);
SELECT "finalists" FROM "singles" WHERE "surface"='hard' AND "winners"='serena williams 6–1, 6–7(7), 6–3';