If you move your back leg or shoulders after coming to a set position, that’s a balk.
In this case, the pitcher did both. Finding himself helpless to mother nature, the runner on second advanced a base due to high winds.
Starter Troy Scribner was set to make his next pitch, when a gust of wind pushed him clear off of the rubber. He was sent backpedaling into the infield grass, forced to watch hopelessly as the runner trotted towards third base.
Scribner was able to strand the runner at third base, and his Salt Lake Bees came away with a 5-2 victory.
Playing in wind like that is never fun though. Considering that a lot of baseball is standing around, playing in that kind of wind is very uncomfortable for the players on the field.
Baseball games are usually 11 minutes of action squeezed into a three hour game, on windy days like this, you feel every second of it.