What was the outcome of the match on August 20, 1978?
CREATE TABLE "doubles_26_12_14" (
  "outcome" text,
  "date" text,
  "tournament" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);
SELECT "outcome" FROM "doubles_26_12_14" WHERE "date"='august 20, 1978';