CREATE TABLE table_204_523 (id DECIMAL, "week" DECIMAL, "date" TEXT, "opponent" TEXT, "score" TEXT, "result" TEXT, "attendance" DECIMAL, "record" TEXT)

who was the opponent in the last game of the season ?
SELECT "opponent" FROM table_204_523 ORDER BY "date" DESC LIMIT 1
SELECT "opponent" FROM "table_204_523" ORDER BY "date" DESC NULLS LAST LIMIT 1