Scully, take a look at this post.
I am no expert in pitching mechanics but I found it an interesting read. Last summer I saw a bunch of things about MH’s mechanics too and those guy may have been correct. Anyway, I link, you decide. Note the picture I have used in this post is the one that I have not necessarily what is being discussed in the link.
…at the seven-second mark of the clip, his elbow is somehow lower than it was in 2017, which means the ball too is located lower.
Source: New York Mets: Matt Harvey’s mechanics might actually be worse