CREATE TABLE "18_finals_12_titles_6_runner_ups" (
  "outcome" text,
  "year" real,
  "championship" text,
  "surface" text,
  "opponent_in_the_final" text,
  "score_in_the_final" text
);

Question: What was the final score of the Australian Open?
SQL: SELECT "score_in_the_final" FROM "18_finals_12_titles_6_runner_ups" WHERE "championship"='australian open';