This video of Ziomek during his high school days gives a good representation of his arm action.
by Jared Webb @webberoo11
Kevin Ziomek 6'3/200” LHP
I like lefties, have I ever said that before?
Ziomek works with three solid offerings starring as Vandy's Friday night starter. His FB sits in the 90-93 range and plays up due to his two other solid offerings. Ziomek's change-up is his best pitch, boasting good fade with a nice drop off in velocity. The last pitch he will use is a "hybrid" curve that he uses well as a chase pitch.
The big knock on the Vandy LHP seems to be his arm action. When you watch videos of him, you tend to cringe a little at the effort and the snap of his arm. A lot of reports I've read project him as a reliever or a back end starter. His ceiling isn't the highest, but a LHP with three solid offerings and a low 90's FB is a prize for any team.
Any team looking for a developed lefty could take Ziomek off the board early. As of right now most reports have him as a second rounder due to his arm action, but a good junior season could have him pushing into the late first round.
c2013 by Jared Webb. Used with permission.