Who was the opponents in the final on January 5, 2003, on a hard surface?
CREATE TABLE "doubles_19_12_titles_7_runners_up" (
  "outcome" text,
  "date" text,
  "surface" text,
  "partner" text,
  "opponents_in_the_final" text,
  "score_in_the_final" text
);
SELECT "opponents_in_the_final" FROM "doubles_19_12_titles_7_runners_up" WHERE "surface"='hard' AND "date"='january 5, 2003';