Has an Olympic Basketball (Men) game ever ended 66-59?
Exactly once. On August 8, 2012, Spain beat France 66-59, and no Olympic Basketball (Men) game before or since has ended that way. When it happened it was a scorigami, the first 66-59 in league history.
That makes 66-59 the 126th most common final score out of 698 that have ever occurred in Olympic Basketball (Men). One point away, 67-59 has happened 1 times and 66-60 has happened 2 times.