Has an AFL game ever ended 100-92?
It has. 100-92 has been a AFL final 5 times in 16,622 games. The first was Essendon beat Hawthorn on August 10, 1929; the latest was GWS beat Carlton on June 22, 2014.
That makes 100-92 the 589th most common final score out of 6,607 that have ever occurred in AFL. One point away, 101-92 has happened 5 times and 100-93 has happened 8 times. At one point the score disappeared for 52 years, between 1957 and 2009.