Has an AFL game ever ended 162-1?
Exactly once. On September 9, 1899, Geelong beat St Kilda 162-1, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 162-1 in league history.
That makes 162-1 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 163-1 has happened never and 162-2 has happened never.