Has an AFL game ever ended 137-91?
Exactly once. On April 20, 1946, Melbourne beat Geelong 137-91, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 137-91 in league history.
That makes 137-91 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 138-91 has happened 4 times and 137-92 has happened 1 times.