Take a look at the two photos of the same pitcher. One is during a game. The other is during pitching practice. I'm just wondering who can point out what I might be working on in pitching practice, and what existing muscle memory this pitcher is fighting during a game.
Glove swim in and of itself is not necessarily a problem. Sometimes it is severe and can throw the alignment of the chassis off and cause accuracy issues, but a "glove whirl" to use a term used on this board is a common mechanic and it involves the glove coming outside the powerline. The concept of getting the glove to the catcher in a straight line or close to it is one of these teaching myths that you just rescued yourself from by finding this site Not sure if that is what you were referring to,but just in case I thought I would chime in.
Actually, regarding "swim" and glove arm.... Rick Pauly talks about a desired "whirly" glove arm motion that should not be confused with glove arm swim.
Rick, Chime in here if you want regarding the desired whirly action in the glove arm. This particular pitcher needs it, and I've got her doing it in practice. I'll show the clips later.
Also... Look at the feet, knees, body orientation between the two photos. Tell me what difference you see...
Not at all. In the early hours of game day, under cover of darkness the students are abducted by aliens and replaced with clones. These are not the pitchers you are working with. Move along.