Long 6-foot-2, heavier than listed 160, body's a little soft, but has some elasticity, loose movement; full wind; deep arm action, spine tilt towards center, uphill arm path, slingshot action, significant extension to three-quarter slot; delivery re-worked to open hips more, get more on-line and downhill, had landed closed and inverted with significant crossfire around front side, now still mildly closed, much more north-south; lower half doesn't finish, lands stiff and firm, cuts off, finishes square, loose recoil on deceleration; can run on him, deliberate first move, 1.33-1.51; low-fi, stays consistent, keeps his focus.
Flashed 94-96 (t97) first couple innings of the season, has settled down to 92-95; sink, above-average 2-seam run, works the low-and-away corner with it to lefties, lots of grounders, elevates more to righties, attacks the hands; command can get loose, solid-average control projection.
Gets some depth despite lower arm slot, will drop down right-on-right and really yak one, will front door or run it off against righties, can play when executed as a chase pitch to lefties, can steal strikes; solid pitch.
Hard, straight change, moderate vertical action, occasional mild fade; will flash average, less consistent with his execution at present, raw feel, generally keeps it down, rarely hangs; some feel and action, may take a while, but average potential.
Converted shortstop with an unorthodox delivery that has been streamlined a bit. Santana has a solid, moving fastball with some velo that can play against right- and left-handed hitters, and there are two workable secondaries. He still throws like a position player and generates a tough pick-up with good raw stuff. Command and consistency may take some time in the high minors, but the frame looks to be pretty durable and it's not a high-stress delivery. There's a non-zero chance this guy starts some games in the big leagues. I like him as a reliable bullpen arm who can swing, with some leverage opportunity if the velo ticks up as it has previously flashed with adrenaline.