Has a World Baseball Classic game ever ended 12-0?
Yes. World Baseball Classic has seen a final score of 12-0 2 times. It first happened on March 4, 2013, when Cuba beat China, and most recently on October 2, 2022, when Nicaragua beat Pakistan.
That makes 12-0 the 41st most common final score out of 87 that have ever occurred in World Baseball Classic. One point away, 13-0 has happened never and 12-1 has happened 2 times.