Has an AFL game ever ended 97-45?
Exactly once. On June 8, 1997, Adelaide beat Melbourne 97-45, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 97-45 in league history.
That makes 97-45 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 98-45 has happened 1 times and 97-46 has happened never.