What was the score of the match in which mardy fish was the partner?
CREATE TABLE "doubles_6_3_titles_3_runners_up" (
  "outcome" text,
  "date" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);
SELECT "score" FROM "doubles_6_3_titles_3_runners_up" WHERE "partner"='mardy fish';