Has an AFL game ever ended 73-68?
It has. 73-68 has been a AFL final 6 times in 16,622 games. The first was Hawthorn beat Footscray on May 9, 1936; the latest was Gold Coast beat Footscray on April 7, 2019.
That makes 73-68 the 342nd most common final score out of 6,607 that have ever occurred in AFL. One point away, 74-68 has happened 8 times and 73-69 has happened 9 times. At one point the score disappeared for 33 years, between 1964 and 1997.