Hamels, Neyer, Martino
Since Cole Hamels' 2009 season has been covered in some depth on TGP, I thought people might find this Andy Martino blog post to be of interest.
A few thoughts:
First, Martino's criticism of Neyer is entirely fair here. I'm a longtime fan of Neyer's work and I actually agree with his ultimate conclusion about Hamels, but it can't be denied that he always has been and continues to be one of the most egregious straw-manners in the business, and that's exactly what he does to Salisbury in the linked post. Neyer could have just made his point instead of feeling like he needed to first find some sportswriter to cast as his foil. This is a piss-fight that could have been avoided.
Second, I wonder if Martino's belief that certain things have gone "wrong" with Hamels' season is necessarily at odds with the view that most of us share here - that Hamels' peripherals in 2009 are similar to his peripherals in 2008. Maybe there's a way to synthesize both viewpoints. For example, I wonder if Hamels' peripherals have changed at all as the season has gone along. If they have, that could support the "Verducci" hypothesis - that he's been wearing out as his innings have accumulated. Just from eyeballing the game log, his home run rate sure seems to have skyrocketed in the postseason, at least. His pitch counts have also definitely increased lately - are pitch counts necessarily a function of luck?
Third, on more of a big-picture note: while I understand that throughout the history of baseball, pitchers have never shown an ability to sustain high BABIPs and low BABIPs for very long periods of time, it begs the question: is that necessarily because outlying BABIPs are purely a matter of random chance, or could it be because outlying BABIPs are affectable by player adjustments? I don't know if there's any way to conclusively answer this question, but my initial reaction is that both possibilities are equally plausible.
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For example, I wonder if Hamels’ peripherals have changed at all as the season has gone along
WHat sort of time frame are you looking at?
Don't frack with me or you'll get a punch in the kidneys...you've been warned
by jemagee on Nov 1, 2009 5:41 PM EST reply actions 0 recs
I don’t have any specific parameters. I’m just wondering if there are any trends.
by taco pal on Nov 1, 2009 5:51 PM EST up reply actions 0 recs
I am not a statistics expert, however I have been reading a lot of the past posts defending Cole and pointing to the BABIP statistic as a reason for his struggles. The argument that he is the same pitcher seems to be based on K/IP, BB/IP and HR/IP (I admit that this summation might be faulty, I am relatively new to in depth statistical analysis of baseball, but am trying to learn). I was wondering if there was a significant statistical correlation between BABIP and the other statistics that have been mentioned. If Coles BABIP is significantly higher, this would indicate he is getting fewer outs via flyball/groundballs, and is seeing more batters each inning. Longer innings would mean that BB/IP and HR/IP are inflated. This would also mean that a higher proportion of his outs are coming via K, meaning his K/IP is inflated. Does an increased BABIP inflate statistics like K/IP, BB/IP and HR/IP? Or is my logic faulty? Are there better statistics that would control for this phenomenon?
by quakerfan on Nov 1, 2009 7:20 PM EST reply actions 0 recs
the other article Martino linked to is mine, so I have some comments on this.
1) It is not persistent at least partly because pitchers make adjustments. Imagine that a pitcher was predictable and threw a fastball on the outside corner every pitch. Hitters would eventually sit on it and line singles the other way every time. Line drive rate, specifically, has no year to year correlation. So that’s really what’s happening.
2) Hamels has the same line drive rate in 2009 as in 2008.
3) Hamels has the same percent of balls reaching the outfield in 2009 as in 2008.
4) Hamels has generated the same (slightly more) popups and same (slightly more) groundballs.
5) Same whiff rate
6) Same balls out of the strike zone
7) Same foul ball rate
It’s the same everything as I go into even more detail about in my article.
Also, quakerfan is right about BABIP inflating stat/IP stats. That’s why I use per PA.
by Matt Swartz on Nov 4, 2009 4:48 PM EST reply actions 0 recs

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