Has an AFL game ever ended 83-74?
It has. 83-74 has been a AFL final 5 times in 16,622 games. The first was Richmond beat Geelong on September 23, 1933; the latest was Hawthorn beat Sydney on August 25, 2018.
That makes 83-74 the 589th most common final score out of 6,607 that have ever occurred in AFL. One point away, 84-74 has happened 7 times and 83-75 has happened 4 times. At one point the score disappeared for 68 years, between 1950 and 2018.