You could say that this one is a ball in the dirt. Pitching against the Padres, Giants pitcher Barry Zito was apparently trying to throw some sort of off-speed pitch, when the ball slipped out of his hands. Zito seemed confused when the ball wasn't traveling straight to the plate and instead was looping in the air.
The ball landed about half-way to the plate and still somehow rolled to the catcher (it must have been an easy pitch for the catcher to block at least).
How many MPH do you think the pitch was? Check Zito's strange changeup here: