Has an AFL game ever ended 56-50?
It has. 56-50 has been a AFL final 2 times in 16,622 games. The first was Richmond beat Geelong on June 16, 1923; the latest was Carlton beat Sydney on June 30, 1945.
That makes 56-50 the 2421st most common final score out of 6,607 that have ever occurred in AFL. One point away, 57-50 has happened 3 times and 56-51 has happened 2 times.