Has a FIBA World Cup game ever ended 108-53?
Exactly once. On February 24, 2018, Nigeria beat Rwanda 108-53, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 108-53 in league history.
That makes 108-53 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 109-53 has happened never and 108-54 has happened never.