Has an AFL game ever ended 143-90?
Exactly once. On September 5, 1970, St Kilda beat Sydney 143-90, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 143-90 in league history.
That makes 143-90 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 144-90 has happened 1 times and 143-91 has happened 3 times.