What is the Score when there was a hard surface and the Championship is new haven , usa?
CREATE TABLE "singles_9_2_7" (
  "outcome" text,
  "date" text,
  "championship" text,
  "surface" text,
  "opponent" text,
  "score" text
);
SELECT "score" FROM "singles_9_2_7" WHERE "surface"='hard' AND "championship"='new haven , usa';