Has an AFL game ever ended 31-24?
It has. 31-24 has been a AFL final 2 times in 16,622 games. The first was Geelong beat Essendon on June 11, 1898; the latest was Carlton beat Geelong on June 18, 1977.
That makes 31-24 the 2421st most common final score out of 6,607 that have ever occurred in AFL. One point away, 32-24 has happened 1 times and 31-25 has happened never. At one point the score disappeared for 79 years, between 1898 and 1977.