julray, the barrel is released behind you which should allow for the scap to be engaged.. The release also allows for hitters to balance out the the forward momentum which prevents the weight from transferring across the pelvis to the front leg.
I'm curious what you think the role of the front side scap is during this action? (hitter's left side in this gif)
Lead forearm pronating causes the blur along with rear forearm supinating. Yes, the bottom hand pulls the knob straight up.
I'm curious what you think the role of the front side scap is during this action? (hitter's left side in this gif)
Obviously I don't have the knowledge to participate in this debate, LOL.. However in interest of instructing my DD the proper way to rotate the barrel I need clarification. I am not seeing the bottom hand pulling the barrel straight up. Looks to me like the knob is on a downward and forward path, not upward and forward. I'm just basing this on what I see in the gif, not knowledge of what supposed to happen.
Same thing here if I look at Donaldson.
https://www.youtube.com/watch?v=HVWRXll0_X0
Same as Batista
https://www.youtube.com/watch?v=gm7GFYVubSE
and Pujois
https://www.youtube.com/watch?v=fVZNFaFOQU4
What I don't understand is how they get that rearward arc to occur so deep when pulling the knob forward
The bottom hand does not pulls the knob straight up ..... the bottom hand flattens to the swing plane, and the pronation involved in the bottom hand flattening is what I believe butter means by 'straight up' ... but it is indeed not 'straight up'.
Isn't the scap engaged/pinched way before the barrel is released
Flat in relation to the angle of the hitter's torso. In the video bobby is standing up straight and Yes He flattens in relation to His torso which is also flat to the ground because He is not tilted in His demo.
BUT, Barry's lead arm/hand gets flats in relation to his torso angle which is tilted forward at his pelvis so His hands don't get flat in relation to the ground....