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I obsesed about Hultzen a couple month ago, and I just did not see a Santana/Lincecum/Hamels level changeup in the video. Its plus, but I'm not seeing plus/plus.
That said, deception, arm slot, and plane can add to a pitch's effectiveness even if the break and fade aren't top class so its hard to say definitively that he won't develop a plus-plus change in the future. Thats why you see guys like Cole getting knocked around, and Bauer untouched.
Hultzen does short-arm the ball.. Whats your take on his deception Doc?