OK, here's my very first diary.  I hope people find it worth taking a look at.  I ran across a link to this article over on the Cubs MLB board and thought it would be worth bringing to people's attention over here:

http://www.hardballtimes.com/main/article/breaking-down-the-broken-down-a-video-analysis-of-mark-pri or

Carlos Gomez has broken up video of Prior's delivery as it's changed from 2001-2007 and found some clear differences that might explain some of his problems.  

As there have been a couple of recent posts concerning Priors delivery past and present I thought this might be a useful addition.  Not being very knowledgeable about the role of mechanics in pitching (other than to know that they play a significant role in a pitcher's success or failure) as others here are, I can't say that Gomez's conclusions are relevant.  Comments would be appreciated.