Has a FIBA World Cup game ever ended 98-88?
Exactly once. On August 27, 2023, Japan beat Finland 98-88, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 98-88 in league history.
That makes 98-88 the 240th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 99-88 has happened 2 times and 98-89 has happened never.