Has a FIBA World Cup game ever ended 86-77?
It has. 86-77 has been a FIBA World Cup final 3 times in 2,041 games. The first was Argentina beat Germany on September 3, 2002; the latest was Japan beat Venezuela on August 31, 2023.
That makes 86-77 the 96th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 87-77 has happened 4 times and 86-78 has happened 1 times.