Has an AFL game ever ended 138-74?
Exactly once. On August 30, 1947, Fitzroy beat Footscray 138-74, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 138-74 in league history.
That makes 138-74 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 139-74 has happened never and 138-75 has happened 1 times.