What was the outcome for the match at the leipzig tournament with a score w/o?
CREATE TABLE "singles_23_12_11" (
  "outcome" text,
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent" text,
  "score" text
);
SELECT "outcome" FROM "singles_23_12_11" WHERE "tournament"='leipzig' AND "score"='w/o';