Has an AFL game ever ended 73-45?
Yes. AFL has seen a final score of 73-45 3 times. It first happened on August 19, 1967, when North Melbourne beat Hawthorn, and most recently on August 11, 2019, when Richmond beat Carlton.
That makes 73-45 the 1534th most common final score out of 6,607 that have ever occurred in AFL. One point away, 74-45 has happened 3 times and 73-46 has happened 4 times. At one point the score disappeared for 51 years, between 1967 and 2018.