What shows for Playoffs when the Open Cup shows as did not qualify, and a Regular Season was 3rd, south atlantic?
CREATE TABLE "year_by_year" (
  "year" real,
  "division" real,
  "league" text,
  "regular_season" text,
  "playoffs" text,
  "open_cup" text
);
SELECT "playoffs" FROM "year_by_year" WHERE "open_cup"='did not qualify' AND "regular_season"='3rd, south atlantic';