CREATE TABLE table_11999 ("Date" TEXT, "Round" TEXT, "Attendance" TEXT, "Opposition" TEXT, "Stadium" TEXT)

Who was the opposition at 11,682 excl. exhibition match?
SELECT "Opposition" FROM table_11999 WHERE "Stadium" = '11,682 excl. exhibition match'
SELECT "Opposition" FROM "table_11999" WHERE "Stadium" = '11,682 excl. exhibition match'