Has a FIBA World Cup game ever ended 115-73?
Exactly once. On November 28, 2021, Canada beat Bahamas 115-73, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 115-73 in league history.
That makes 115-73 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 116-73 has happened never and 115-74 has happened never.