That was a very good illustration of a "young" hitter who is well on his way. Definitely hitting against a firm/rigid front side.
Reminds me of a early pictures of Tiger Woods
P.S.(That rocking back motion must be attributed to the paint roller at the end of the extension not seen in picture; reminds me of how I used to rock back when swinging a rake when I was about that age and how I would rock back-lol Is it a paint roller or rake?)
Shep