Has a FIBA World Cup game ever ended 85-64?
Exactly once. On August 30, 2014, Serbia beat Egypt 85-64, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 85-64 in league history.
That makes 85-64 the 240th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 86-64 has happened 1 times and 85-65 has happened 4 times.