CREATE TABLE table_203_371 (id DECIMAL, "round" DECIMAL, "opponent" TEXT, "result" TEXT, "bro." DECIMAL, "opp." DECIMAL, "date" TEXT, "venue" TEXT, "crowd" DECIMAL, "position" TEXT)

number of opponents faced ?
SELECT COUNT(DISTINCT "opponent") FROM table_203_371
SELECT COUNT(DISTINCT "opponent") FROM "table_203_371"