The only issue I have with Strasburg is his mechanics, as pointed out
here
"I can say with confidence that Steven Strasburg is the most productive pitching prospect in two whole years! More impressively, the second best as far back as I can research. Unfortunately, there is more to evaluating pitching than just radar gun readings and stats. Mechanics are arguably the most important aspect in determining a pitchers development, it really matters how you do it instead of just what you do.
There are a few videos of Strasburg on youtube. After breaking them down like the Zapruder film I've made a few assements. Here's what worries me:
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He brings his elbow too far back during the scap load phase of his delivery.
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While hard to tell from the video, given his arm angle upon release and his follow through he seems to have a supinated release.
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His follow through is really bad. There's significant arm recoil and he finishes basically standing up.
Obviously he does some things well, I mean he throws 99 mph with great control. However, there are enough red flags that I believe he's a major injury risk. That does not mean he will absolutely get hurt, just that he's more likely to other people. Without taking him to ASMI (American Sports Medicine Institute) labs and getting specific joint load data, no one can say for sure."