Thanks for bringing up Carda. She is a great pitcher, but she throws IR, not HE.
The characteristics of IR is the hand pulling the ball around the circle rather. (An HE pitcher pushes the ball around the circle.) At release, the forearm internally rotates to bring the palm square to the plate. The rotation of the forearm carries over into the follow through, causing the hand to flip over.
The most common follow through with an IR pitcher is with the palm down and extended toward the plate (the "sorcerer" follow through). Still other pitchers (like Amanda Scarborough) do a "faky" follow through...after the pitch, the palm is down, but then they pull the arm into the "L" position. Other IR pitchers bring the hand across the body with the palm down.
So, look for (1) is the hand behind the ball at 12 and (2) has the hand flipped over on the follow through. Attached is a picture of Carda at 12. She has her hand is behind the ball. (Technically, it is impossible for her *not* to throw with IR if her hand is behind the ball at 12.)
When Carda throws fastballs, she will sometimes end up palm down. Other times she does an "across the body, palm down" follow through on some pitches. And, sometimes she throws a fastball where the arm ends up in the "L" position, but the palm has rotated toward the catcher.
She throws 2 fastballs, all with the characteristic palm down follow through. She then throws a fastball with an across the body palm down She then throws a couple of riseballs with the L, and then a really sweet "low" rise.
Carda throws a riseball and change with her arm ending in the L position. The "L" position on the rise is a little unusual these days, it was quite common a few years ago.
Go to 1:15 of this video.
In the video, go to 0:39.
Thanks for the analysis. Helpful.
To me she looks like she muscles the ball, which takes incredible arm and leg strength and agility. Doesn't even seem like it should be possible at the level she pitches at.
So yes, her arm around the circle is great, but she also gets very wide open, monkey butts and walks a lot of batters.
Not sure what to call it. HE? IR? HEIR?
Also, if I remember correctly she walked a dozen in a loss to Auburn in the 2015 WCWS (last game of her senior year), including two walks with two outs in extra innings, the latter of which was a walk-off for Auburn. Now, granted, she threw >200 pitches that game and also batted, but if there was ever a situation where a pitcher needed to throw strikes....