Has an AFL game ever ended 123-80?
It has. 123-80 has been a AFL final 2 times in 16,622 games. The first was Richmond beat Melbourne on May 7, 1966; the latest was Adelaide beat Essendon on August 12, 2017.
That makes 123-80 the 2421st most common final score out of 6,607 that have ever occurred in AFL. One point away, 124-80 has happened 3 times and 123-81 has happened 2 times. At one point the score disappeared for 51 years, between 1966 and 2017.