Has an AFL game ever ended 73-26?
Exactly once. On May 2, 1925, Melbourne beat St Kilda 73-26, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 73-26 in league history.
That makes 73-26 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 74-26 has happened never and 73-27 has happened never.