Would it be wise, to pick up a change up, that would make fore a total of two, because I am uncomfortable throwing a curveball (I'm not flexible enough). The change up I throw is the palmball, it just goes straight and sinks. I am thinking about using the foshball, I heard its supposed to sink and tail into righties from a RHP. Also I had heard that a screwball, could be a good alternative to a curveball, I also heard that if you throw it correctly, then it doesn't hurt your arm too much, but it is still chancy. So, what do you guys think about having two change ups in your repertoire? the screwball probably is a terrible idea, but any comments on it? Also, and alternative pitches I could go with?