Has a FIBA World Cup game ever ended 80-69?
Yes. FIBA World Cup has seen a final score of 80-69 3 times. It first happened on July 3, 1974, when Canada beat Australia, and most recently on August 31, 2019, when Poland beat Venezuela.
That makes 80-69 the 26th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 81-69 has happened 2 times and 80-70 has happened 2 times. At one point the score disappeared for 40 years, between 1974 and 2014.