Comments on: Six Hypotheses About a Bullpen http://wrigleyville.locals.baseballprospectus.com/2015/05/22/six-hypotheses-about-a-bullpen/ Just another Baseball Prospectus Local Sites site Sat, 16 Feb 2019 21:04:52 +0000 hourly 1 http://wordpress.org/?v=4.1.1 By: Rian Watt http://wrigleyville.locals.baseballprospectus.com/2015/05/22/six-hypotheses-about-a-bullpen/#comment-813 Fri, 22 May 2015 14:01:06 +0000 http://wrigleyville.locals.baseballprospectus.com/?p=1365#comment-813 I think there’s two ways you can look at it. One is, as you say, to look at the number of sliders (or other pitches that saw increases) thrown in the middle of the zone, and look at the outcomes of those pitches. Brooks Baseball has some good resources for this, and I might well do a followup piece on that. The other way is to invert that last, and look at the pitches which have been hit the hardest this year, I’d imagine either by ISO or by Hard%.

The puzzle that I can’t work out is that there’s clearly more damage being done – that shows up in the DRA – but I’m not sure where it’s happening. Both approaches mentioned above would get you closer to that answer, but neither (I think) all the way there. For now, you’re absolutely right that the “lesser claim” is an appropriate default. Thanks for your feedback, it’s really appreciated!

]]> By: Skybrod http://wrigleyville.locals.baseballprospectus.com/2015/05/22/six-hypotheses-about-a-bullpen/#comment-812 Fri, 22 May 2015 13:56:33 +0000 http://wrigleyville.locals.baseballprospectus.com/?p=1365#comment-812 Thank you for your thoughts, Rian. Out of curiosity I checked the sliders of Rondon, Rosscup and Strop this season, but I’m not sure what we are looking for to see, if slider’s been a problem. Number of hits given up off of the sliders? Number of sliders thrown in the middle of the zone?
As of now, I prefer to stick to the “lesser claim”, which is your 6th hypothesis. We should wait and see.

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