Adjusting the ball in the hand is legal. In fact, in the wind-up position, the pitcher can reach into his glove, adjust the ball, and take his hand out of the glove without balking. I interpreted juggling to mean tossing the ball up into the air a few inches and catching it. I've seen that at the lower levels, but never in high school. I never heard the term juggling used in baseball, but equated it to what you see guys do with bowling pins. If those pins don't leave his hands, he's not juggling B).