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A lot of articles have popped up in recent years about studying the effects of catcher defense on the game. A very well written one at Grantland popped up a few days ago by Ben Lindbergh, editor in chief at Baseball Prospectus.
Here are some more stats heavy articles on the topic:
http://www.baseballprospectus.com/article.php?articleid=20596
http://www.baseballprospectus.com/article.php?articleid=15093*
*This article leads to an interesting aside as well. The data is older, it comes from 2008-2011, but it points to Brian McCann, potential free agent next offseason, to be above average in this area of his game. It also points to potential free agents Carlos Ruiz as being below average with last offseason signing Dionner Navarro being just a tick better than Ruiz.
There is a lot of cool stuff in the article, but the bolded quote is the most important thing that has stuck out to me in reading various articles on the topic. And the reason this stuck out to me was because this was a criticism of Welington Castillo that we heard last year.In a September 2011 article titled "Spinning Yarn: Removing the Mask," Mike Fast, then an analyst for Baseball Prospectus (and now an analyst for the Houston Astros), attempted to determine what catcher receiving was worth. By studying where strikes are typically called and establishing which pitchers were getting more or fewer strikes than they "should" have, given where their pitches crossed the plate, Fast was able to isolate the effect of the catcher. He concluded that pitch framing can make a major impact, and it also is more consistent from year to year than even reliable offensive metrics like on-base percentage or slugging percentage. In other words, it's not insignificant, and it's not just noise. It's a valuable skill that persists from season to season.
Now I haven't noticed any problems with Castillo defensively, but I'm not an expert on the subject. It has also felt like the Cubs have been squeezed a number of games, but that could be just the fact that those moments are more memorable than when the Cubs pitchers got a break on a call. At the end of the day it is something that stats and scouts agree is an important factor on winning baseball games that probably warrants closer watching on a potential key piece of a hopefully, we all hope, competitive team in the near future.Cubs television analyst Bob Brenly, a former catcher, pointed that out during Fridays broadcast, and the idea that Castillo has trouble framing pitches quickly gained traction on Twitter.
Here are some more stats heavy articles on the topic:
http://www.baseballprospectus.com/article.php?articleid=20596
http://www.baseballprospectus.com/article.php?articleid=15093*
*This article leads to an interesting aside as well. The data is older, it comes from 2008-2011, but it points to Brian McCann, potential free agent next offseason, to be above average in this area of his game. It also points to potential free agents Carlos Ruiz as being below average with last offseason signing Dionner Navarro being just a tick better than Ruiz.