Has an AFL game ever ended 58-31?
Exactly once. On August 3, 1907, Essendon beat Fitzroy 58-31, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 58-31 in league history.
That makes 58-31 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 59-31 has happened never and 58-32 has happened 1 times.