Has an AFL game ever ended 123-72?
Exactly once. On June 30, 1996, Melbourne beat Adelaide 123-72, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 123-72 in league history.
That makes 123-72 the 3884th most common final score out of 6,649 that have ever occurred in AFL. One point away, 124-72 has happened 2 times and 123-73 has happened 1 times.