Has a FIBA World Cup game ever ended 98-87?
Exactly once. On July 5, 1986, Italy beat China 98-87, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 98-87 in league history.
That makes 98-87 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 99-87 has happened 2 times and 98-88 has happened 1 times.