Having only seen a little video of Medeiros (and plenty of scouting reports), I still can't help but think of a young Randy Johnson. It's easy to forget how in his early 20s, the Big Unit was critiqued for his weird almost side-arm angle. He really only had two pitches early in his career--fastball and slider. He had little control, but still generated few his, lots of groundouts, and plenty of K's. I'm not saying Medeiros will end up having that kind of career. But I like the low-arm angle as it's easier on the arm. At least, I think it is. I remember when I'd play catch in my teens/20s, and if my arm was stiff I would just warm up using a side-arm motion and it helped me loosen up without much effort.