Has an AFL game ever ended 125-109?
Exactly once. On August 6, 1966, Sydney beat Melbourne 125-109, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 125-109 in league history.
That makes 125-109 the 3883rd most common final score out of 6,649 that have ever occurred in AFL. One point away, 126-109 has happened never and 125-110 has happened 3 times.