Has an Olympic Basketball (Men) game ever ended 86-75?
Exactly once. On September 23, 2000, Australia beat Angola 86-75, and no Olympic Basketball (Men) game before or since has ended that way. When it happened it was a scorigami, the first 86-75 in league history.
That makes 86-75 the 126th most common final score out of 698 that have ever occurred in Olympic Basketball (Men). One point away, 87-75 has happened 1 times and 86-76 has happened never.