Has an AFL game ever ended 109-81?
Yes. AFL has seen a final score of 109-81 5 times. It first happened on May 15, 1937, when Essendon beat Hawthorn, and most recently on May 25, 1991, when Essendon beat St Kilda.
That makes 109-81 the 633rd most common final score out of 6,649 that have ever occurred in AFL. One point away, 110-81 has happened 4 times and 109-82 has happened 6 times. At one point the score disappeared for 28 years, between 1937 and 1965.