Has a FIBA World Cup game ever ended 86-69?
Exactly once. On August 31, 2002, Russia beat Venezuela 86-69, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 86-69 in league history.
That makes 86-69 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 87-69 has happened 2 times and 86-70 has happened 3 times.