Has an AFL game ever ended 80-74?
Yes. AFL has seen a final score of 80-74 4 times. It first happened on May 23, 1931, when Geelong beat Carlton, and most recently on June 22, 2012, when Sydney beat Geelong.
That makes 80-74 the 947th most common final score out of 6,607 that have ever occurred in AFL. One point away, 81-74 has happened 6 times and 80-75 has happened 5 times. At one point the score disappeared for 44 years, between 1968 and 2012.