Has an AFL game ever ended 51-34?
Yes. AFL has seen a final score of 51-34 3 times. It first happened on May 10, 1902, when Collingwood beat Melbourne, and most recently on May 5, 2019, when Adelaide beat Fremantle.
That makes 51-34 the 1534th most common final score out of 6,607 that have ever occurred in AFL. One point away, 52-34 has happened 1 times and 51-35 has happened 1 times. At one point the score disappeared for 107 years, between 1902 and 2009.