Has an Olympic Basketball (Men) game ever ended 98-50?
Exactly once. On August 18, 2008, Spain beat Angola 98-50, and no Olympic Basketball (Men) game before or since has ended that way. When it happened it was a scorigami, the first 98-50 in league history.
That makes 98-50 the 126th most common final score out of 698 that have ever occurred in Olympic Basketball (Men). One point away, 99-50 has happened never and 98-51 has happened never.