3.19.16: Hartline is a big lefty with a strong lower half. He throws from a high three-quarters arm slot with a drop and drive delivery. He has a short, loose arm action and generates velocity with normal effort. His shoulders are closed and slightly uphill as he strides out to a slightly closed landing. Hartline’s fastball touched 82 and he worked from 79-81 with good plane and a bit of cut on his ball. His breaking ball had 1/7 break and ran 65-68, with more power action when thrown harder. His changeup was thrown with good armspeed and fading action.
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