Are there any common things that a pitcher might do to tip a pitch? Lots of times i notice that the pitchers arm angle will drop on a curveball, but are there any pre pitch changes that are fairly common among pitchers? Are there any specific parts that you might see a variation in from pitch to pitch? I do realize that not all pitchers are going to have something easy to pick up on, but I think you guys know what I'm looking for. Thanks.
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