Has an AFL game ever ended 122-86?
Exactly once. On September 16, 2011, Hawthorn beat Sydney 122-86, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 122-86 in league history.
That makes 122-86 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 123-86 has happened 6 times and 122-87 has happened 3 times.