Has a FIBA World Cup game ever ended 79-61?
Exactly once. On June 28, 2018, Lithuania beat Poland 79-61, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 79-61 in league history.
That makes 79-61 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 80-61 has happened 1 times and 79-62 has happened 2 times.