Has an AFL game ever ended 15-10?
Exactly once. On July 3, 1897, Geelong beat Melbourne 15-10, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 15-10 in league history.
That makes 15-10 the 3884th most common final score out of 6,649 that have ever occurred in AFL. One point away, 16-10 has happened never and 15-11 has happened never.