Im not sure how important this is.
Lets use Rachel Garcia as an example, she turns her foot a little bit.
Would turning her drive foot less make her more better than changing her rise ball spin from bullet to 11-4? I think that is an easy answer. Spin axis all day.
Edit: I think posterior chain is imperative. But s little foot turn is not the end of the world.
dd is in beginning stages of total forward drive without ankle collapse meaning we are still working drills. I don’t know if she will achieve it at full speed pitch but I do believe it is going to affect her spin rotation hopefully farther away from bullet spin.
she was in a rut for speed so we are just trying something different with lower half.
the reason I am trying this change is because Toni (professional pitcher) said she wish she would have known this when she was younger because it would have made her better.
So I’m on here asking people I trust for their opinions. I will give feedback on dd progress or failure to help others steer toward or away from this teaching.
as far as the video I had never seen it before but I am glad to know even Rachel can’t throw a perfect 6/12 riseball And even she has room for improvement because she is one of the best pitchers in the game.