Sorry, coachbob I disagree. He is working the barrel down to the ball and attempting to do it from within the sagittal plane. I don't see him turning under (supinating I believe is the correct term) into contact.
Is it me or does this kids arm bar all the way through...maybe we aren't looking at the swing but he is stretching the arms and his front arm is barred. If you look at the hips well ok I guess it's good, but his hands do not look good at all. His arm is barred at his connection point. Don't like the swing in the upper half at all.