I, for one, am of the opinion that Kyle Seager has struggled with his mechanics all year. It’s easy to make an off-hand comment like that and not back it up though, so let’s go ahead and back it up.
In late June, I noticed that Seager’s hands had a little extra motion to them — not the obvious hitch but something more subtle.
For the whole low down, I recommend reading my personal blog post about this, but you’ll get the gist with a couple gifs from MLB.com and Baseball Swingpedia on YouTube.
Here is Seager’s swing (in slow motion) from early this year:
Pay particularly close attention to his hands as he begins to plant his front leg — they drift.