Has a FIBA World Cup game ever ended 104-83?
Exactly once. On August 25, 2022, Slovenia beat Estonia 104-83, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 104-83 in league history.
That makes 104-83 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 105-83 has happened 1 times and 104-84 has happened 1 times.