Has an AFL game ever ended 89-55?
Yes. AFL has seen a final score of 89-55 6 times. It first happened on August 17, 1912, when Fitzroy beat St Kilda, and most recently on July 4, 1999, when Carlton beat Hawthorn.
That makes 89-55 the 342nd most common final score out of 6,607 that have ever occurred in AFL. One point away, 90-55 has happened 3 times and 89-56 has happened 3 times. At one point the score disappeared for 31 years, between 1931 and 1962.