Has a FIBA World Cup game ever ended 85-58?
Exactly once. On November 30, 2018, Egypt beat Chad 85-58, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 85-58 in league history.
That makes 85-58 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 86-58 has happened never and 85-59 has happened never.