Has an AFL game ever ended 91-77?
It has. 91-77 has been a AFL final 3 times in 16,622 games. The first was Fitzroy beat Sydney on June 10, 1944; the latest was Sydney beat North Melbourne on August 14, 2021.
That makes 91-77 the 1534th most common final score out of 6,607 that have ever occurred in AFL. One point away, 92-77 has happened 8 times and 91-78 has happened 6 times. At one point the score disappeared for 40 years, between 1944 and 1984.