Has an AFL game ever ended 143-46?
Exactly once. On June 16, 1984, Melbourne beat Sydney 143-46, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 143-46 in league history.
That makes 143-46 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 144-46 has happened 1 times and 143-47 has happened 1 times.