What club did united states player ty harden play for?
CREATE TABLE "top_goalscorers_by_season" (
  "season" real,
  "player" text,
  "club" text,
  "nationality" text,
  "goals" real
);
SELECT "club" FROM "top_goalscorers_by_season" WHERE "nationality"='united states' AND "player"='ty harden';