Has a FIBA World Cup game ever ended 86-81?
Yes. FIBA World Cup has seen a final score of 86-81 2 times. It first happened on May 23, 1970, when Brazil beat Uruguay, and most recently on September 12, 2010, when Argentina beat Spain.
That makes 86-81 the 77th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 87-81 has happened 1 times and 86-82 has happened never. At one point the score disappeared for 40 years, between 1970 and 2010.