Has an Olympic Baseball game ever ended 11-6?
Exactly once. On August 20, 2004, Australia beat Greece 11-6, and no Olympic Baseball game before or since has ended that way. When it happened it was a scorigami, the first 11-6 in league history.
That makes 11-6 the 48th most common final score out of 87 that have ever occurred in Olympic Baseball. One point away, 12-6 has happened never and 11-7 has happened never.