Has a FIBA World Cup game ever ended 88-66?
It has. 88-66 has been a FIBA World Cup final 2 times in 2,041 games. The first was Cyprus beat Albania on February 18, 2021; the latest was Panama beat Bahamas on February 26, 2023.
That makes 88-66 the 222nd most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 89-66 has happened never and 88-67 has happened 3 times.