Has an AFL game ever ended 89-73?
Yes. AFL has seen a final score of 89-73 5 times. It first happened on June 16, 1984, when Footscray beat Geelong, and most recently on April 8, 2017, when Fremantle beat Footscray.
That makes 89-73 the 589th most common final score out of 6,607 that have ever occurred in AFL. One point away, 90-73 has happened 8 times and 89-74 has happened 6 times.