Centerfield: I always wondered why sacrifice flies were not treated the same way in the Majors as it is in Little League. In the majors, I see players retreat to the base, put one foot on third, and face the outfielder. Once the ball is caught, they turn to home and take off. When I was growing up, we were taught to get on third, face home, and get into position to take off. We focused on the third base coach, and waited for his signal. As soon as we got the signal, we took off and didn't look anywhere else but the on-deck guy, who told us to walk it in or slide. My guess is that you get a better jump by anticipating when the catch is going to be made and use that to 'burst out of the blocks' as in a sprint. You're still in contact with the bag as your lead leg moves into its initial stride as well as ahead of the game by the time ball hits glove. MLers (theoretically at least) have better judgement to do that than 10 year olds and therefore don't need the coach to yell "NOW!!" at them. The runner would lose split-seconds due to the gap between hearing the coach and reacting plus the first part of the stride he gains from anticipating.