Has an AFL game ever ended 126-90?
Exactly once. On August 13, 1938, Geelong beat Fitzroy 126-90, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 126-90 in league history.
That makes 126-90 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 127-90 has happened 4 times and 126-91 has happened 2 times.