I'm as shocked that you refuse to acknowledge how easy it is to read body language, we've had at least 4 courses on it at work over the last 10 years to work better with customers. Furthermore anyone who teaches or coaches and is any good at it naturally and quickly learns to read body language because in many cases it gives a more accurate picture than the what the student or athlete will tell you for a variety of reasons.I can see why you would be shocked because I don't think we are talking about the same thing. Yes, I notice when Wolf is grumbling under his breath after missing the location on a pitch or when Hart swears after swinging at junk. That's reacting to a bad result. Does that adversely affect future performance? Probably for some, perhaps not for others. I want to know the body language I should be looking for that shows Greinke is lacking confidence BEFORE something bad happens. What was it about Greinke's body language that suggested he was lacking confidence BEFORE he throws the pitch that sails over the fence. Is there really a correlation? Are those unfair questions to ask? What's your explanation for Greinke's blow-up innings? He's certainly not giving up dribblers all over the diamond, balls are getting smoked. I've been saying since his 3rd start that his FB location is inconsistent and he's been hanging his slider quite a bit when I've watched him pitch. I don't have an explanation, as I haven't studied the data, nor do I don't trust my memory to gauge how well he's located the 600-some fastballs he's thrown this year. Furthermore, if you've ever looked at a graph of a starter's pitch location for a given game, they are always all over the place. I just grabbed a random game from yesterday... is this good pitch location? http://www.brooksbaseball.net/pfxVB/location.php?pitchSel=430935&game=gid_2011_07_05_phimlb_flomlb_1/&batterX=&innings=yyyyyyyyy&sp_type=1&s_type= I have no idea just looking at that. Now add an extra layer of the uncertainty of identifying pitch location while watching a game on TV. Is there a correlation between bad pitch location and bad performance? Of course. That's been tested and verified. But speed and movement are also huge factors. Most pitches with a bad result will have poor location because most pitches that can even be hit have relatively poor location (In the strike zone but not on corners). Of course, even more of those pitches will a called strike, foul or a ball-in-play out. The key is to compare Greinke's 2011 pitch location with some kind of base line. I'm am skeptical of ANYONE'S ability to analyze large datasets accurately and without bias. You may be 100% correct that his pitch location has been poor this year. That wouldn't be surprising at all. But right now, it's just an unsubstantiated theory. most of what we talk about here is, so none of us should be TOO sure that we are right about anything.