That white spot is probably a reflection off some shiny surface. Looking at hand, arm and shoulder a pitch could not be in that position. I think is an accidental.
AP wrote:
Hi, mnpacker! I have to say you made a fine photo of your son the pitcher on his college baseball team. But, you added a white circle as the ball. What gives it away, is the base ball is too small. If the ball is coming towards you, it would be larger in size. Depending on your shutter speed, the ball would appear to be sharper in focus. AP