Has a FIBA World Cup game ever ended 93-91?
Exactly once. On July 13, 1974, Spain beat Brazil 93-91, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 93-91 in league history.
That makes 93-91 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 94-91 has happened never and 93-92 has happened 3 times.