CREATE TABLE "season_by_season" (
  "season" text,
  "tier" text,
  "league" text,
  "pos" text,
  "postseason" text,
  "cup_competitions" text,
  "european_competitions" text
);

Question: Name the position for european competitions of eurocup regular season
SQL: SELECT "pos" FROM "season_by_season" WHERE "european_competitions"='eurocup regular season';