The Cubs open PNC Park for 2008 against Pirates lefty Tom Gorzelanny. He's from Evergreen Park, IL, and has been previewed here before. Based on ESPN's profile, I picked out four pitches, but, using a 5 cluster approach, I cleared up something that, IMO, was quite obviously wrong about the previous analysis.
The slider needs to be split into a curve and a slider.
These numbers come from two starts, one at Wrigley in 2007 (the impetus for the prior post on his pitches) and one more from April 2, 2008, in Atlanta.
Here's how my pitch IDs match-up against MLB.com's
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