What is the Tournament against Vladimir Zednik?
CREATE TABLE "singles_10_3_titles_7_runner_ups" (
  "outcome" text,
  "date" text,
  "tournament" text,
  "surface" text,
  "opponent" text,
  "score" text
);
SELECT "tournament" FROM "singles_10_3_titles_7_runner_ups" WHERE "opponent"='vladimir zednik';