Has a FIBA World Cup game ever ended 88-86?
It has. 88-86 has been a FIBA World Cup final 5 times in 2,041 games. The first was Argentina beat Mexico on May 16, 1963; the latest was New Zealand beat Egypt on September 2, 2023.
That makes 88-86 the 22nd most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 89-86 has happened 1 times and 88-87 has happened never. At one point the score disappeared for 39 years, between 1963 and 2002.