Pitching Mechanics Analysis
Let's look at the pitching
mechanics of Josh Kinney using some high definition video that I shot
just a couple of weeks ago at Spring Training.
To start off with, I like how Josh Kinney loads his hips in
Frame 28. He does this by reverse-rotating his hips but not his
shoulders, which is good. However, from that point on Josh Kinney does a number of things that concern me.
First, in Frame 43 you can see that Josh Kinney starts to open
his hips right out of his leg lift. This isn't a huge deal, but
it does suggest that he may be less efficient, and more arm-y,
than he could be.
Second, and more
importantly, in Frame 55 you can see that Josh Kinney leads with
his elbows out of his arm swing. As a result, in Frame 62 he
ends up in a pretty classic
Inverted W position, with his elbows both above and behind
his shoulders (like
Mark Prior). While the Inverted W isn't automatically bad,
and is only bad if it creates a timing problem, in Frame 66 and
Frame 67 you can see that Josh Kinney's shoulders rotate quite a
bit before his Pitching Arm Side (PAS) forearm is vertical. This
increases the load on both the elbow and shoulder and, along
with the fact that he throws a slider, explains why Josh Kinney
recently needed Tommy John Surgery. It also suggests that Josh
Kinney is due for shoulder problems in a few years.