CREATE TABLE "senior_career" (
  "year" real,
  "competition_description" text,
  "location" text,
  "apparatus" text,
  "rank_final" real,
  "score_final" real
);

Question: What is the lowest final score of the American Cup competition before 2009?
SQL: SELECT MIN("score_final") FROM "senior_career" WHERE "competition_description"='american cup' AND "year"<2009;