Has an Olympic Baseball game ever ended 12-1?
It has. 12-1 has been a Olympic Baseball final 3 times in 208 games. The first was Japan beat Spain on January 1, 1992; the latest was United States beat Australia on September 24, 2000.
That makes 12-1 the 19th most common final score out of 87 that have ever occurred in Olympic Baseball. One point away, 13-1 has happened 1 times and 12-2 has happened 2 times. Nearly all of its occurrences fall between 1980 and 2009.