Has an AFL game ever ended 122-68?
Exactly once. On July 22, 1939, Richmond beat Essendon 122-68, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 122-68 in league history.
That makes 122-68 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 123-68 has happened 3 times and 122-69 has happened 2 times.