Has an AFL game ever ended 103-91?
It has. 103-91 has been a AFL final 6 times in 16,622 games. The first was Footscray beat Essendon on July 15, 1933; the latest was Adelaide beat Geelong on March 20, 2021.
That makes 103-91 the 342nd most common final score out of 6,607 that have ever occurred in AFL. One point away, 104-91 has happened 5 times and 103-92 has happened 3 times. At one point the score disappeared for 30 years, between 1961 and 1991.