Son is a 2016 grad and just looking for any insight on some tweaks anyone may see he needs to correct.
https://www.youtube.com/watch?v=7R5PnJyQw6Q
Ok , you asked for tweaks, I'll give you three.(not biggies)
Good news is that he hits the ball.
Tweak # 1 He seem to be a little too upright in his stance as opposed to knees bent.
Tweak # 2 His back elbow is in a higher position than I would recommend for hitting the 90 mph. FB
Tweak # 3 Lots of colllege coaches want to see you get "that back knee dirty" (lower)
If you son is successful with his current swing, don't change anything.
The video doesn't allow further analysis because it can't be slowed down sufficiently to see what;s happening just before and at the moment of contact.
Watch Mickey Mantle utilizing the three tweaks mentioned above