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Dan Brooks 

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04-21

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BP Daily Podcast: Effectively Wild Episode 432: The Weekend of Unwritten Rules
by
Ben Lindbergh and Dan Brooks

04-08

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BP Unfiltered: Mark Appel: A PITCHf/x First Look
by
Dan Brooks

03-03

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47

Framing and Blocking Pitches: A Regressed, Probabilistic Model
by
Harry Pavlidis and Dan Brooks

01-29

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28

Throw the Flag
by
Dan Brooks and Russell A. Carleton

01-16

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2

BP Unfiltered: RISPy Business
by
Dan Brooks

09-23

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7

Pebble Hunting: Pedro Hernandez and the Rashomon Project
by
Sam Miller, R.J. Anderson, Dan Brooks and Dan Rozenson

10-05

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3

Advance Scout
by
Dan Brooks

09-27

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3

Baseball Prospectus News: Announcing the PITCHf/x Matchup Analysis Tool
by
Dan Brooks

09-14

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2

Baseball Prospectus News: Introducing Pitch Sequence Visualizations
by
Daniel Mack and Dan Brooks

08-30

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BP Unfiltered: Is Stephen Strasburg Wearing Down?
by
Dan Brooks

08-17

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4

BP Unfiltered: Clay Buchholz Does the Splits
by
Dan Brooks

08-14

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11

PITCHf/x Profile: Dissecting the Decline of Josh Beckett
by
Dan Brooks

08-10

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BP Unfiltered: A PITCHf/x Companion Piece on Jered Weaver
by
Dan Brooks

08-09

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BP Unfiltered: Yu Darvish with Two Strikes
by
Dan Brooks

08-08

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9

PITCHf/x Mailbag: Swing Tendencies on 3-0 Counts
by
Dan Brooks and Harry Pavlidis

07-23

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BP Announcements: Sabermetrics, Scouting, and the Science of Baseball
by
Dan Brooks

07-13

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5

BP Announcements: Normalized Hitter/Pitcher Profiles Have Arrived
by
Dan Brooks and Harry Pavlidis

07-12

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24

Baseball Prospectus News: Introducing the BP Pitcher Profiles
by
Dan Brooks and Harry Pavlidis

07-09

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22

Baseball Prospectus News: Introducing the BP Hitter Profiles
by
Dan Brooks and Harry Pavlidis

06-19

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4

BP Unfiltered: Knuckleballing to the Count
by
Dan Brooks

04-30

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6

BP Unfiltered: Sabermetrics, Scouting, and the Science of Baseball
by
Dan Brooks

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Jered Weaver has turned himself into a lefty-killer. Dan looks at how he has changed his approach.

In an article today, Sam Miller explored some of Jered Weaver’s best pitches. Sam noted how Weaver’s results have changed vs. left-handed hitters, and then showed some of Weaver’s best two-seam fastballs and curveballs from his recent start.

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Yu Darvish is taking a different approach with two strikes than he did toward the start of the season.

One way to look at how a pitcher attacks hitters is to look at what the pitcher throws in two-strike counts. In two-strike counts, pitchers often try to put hitters away with a breaking ball, induce weak contact with a sinker, overpower hitters with an extra-hard fastball, or throw a changeup with a bit of extra screw action.

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In the inaugural PITCHf/x mailbag, Harry and Dan examine how batters and pitchers behave on 3-0 counts.

Dan Brooks and Harry Pavlidis, the minds behind Brooks Baseball and the PITCHf/x Hitter and Pitcher Profiles, will be answering your statistical questions using PITCHf/x data on a regular basis at BP. To submit a question for consideration in their next mailbag, email them at mailbag@brooksbaseball.net or cram your question into 140 characters and send it to @brooksbaseball or @harrypav.


For our first PITCHf/x mailbag, we’ve decided to take a look at a deceptively simple question. We’re not so good at simple, however, so we took lemons and made a small storage building out of them.


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Saberseminar just over a week away!

Sabermetrics, Scouting, and the Science of Baseball, a weekend seminar for the benefit of the Jimmy Fund, puts you up close with some of baseball’s top coaches, statisticians, scouts, doctors, and scientists. The seminar takes place on August 4 and 5, 2012 in Boston, MA, and is limited to 200 of baseball’s best fans.

Register now so you can join us on August 4 and 5, 2012 at Boston University’s Metcalf Science Center and enjoy the edge that professional scouting, science, and sabermetrics will give you at your next fantasy or real-life baseball game.

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Our new normalization option lets you compare hitters and pitchers to players of the same handedness.

First, thanks for your enormous level of support and feedback for our new Hitter and Pitcher Profiles. Because of your suggestions, we increased the number of sortable statistics to 19, added several new color schemes, changed some of the layout, and added several new multi-sort options. Your feedback makes building new and great tools easier, so thanks!

We want to announce a new option on our tools and briefly describe how it works. This option is “normalization,” which allows you to compare a pitcher or hitter to other similar pitchers or hitters. It works only for a few of the 19 sorts right now—it will work for all of them eventually—but we think that the most instructive sort is “frequency,” so we’ll describe it using that and let you play around with it. We’ve already done some limited “beta testing” of this new feature via Twitter, and people found it really fun and informative, so we’re excited to announce it on Baseball Prospectus. (As an aside, Harry and I often beta new features late at night on Twitter, so you can come follow us and be part of the creative process if you want.)

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A few days after the rollout of the BP Hitter Profiles, we present their companion piece, the Pitcher Profiles.

Last weekend we posted “Hitter Profiles,” which let you look at PITCHf/x data for each hitter in MLB filtered by a bunch of different attributes. Today, we’re posting their companion piece, “Pitcher Profiles.” You can search for pitchers here. As we did for the Hitter Profiles, we’ll be adding a dropdown link to the search interface from the “Statistics” tab on the nav bar at the top of the page.

We think these profiles will revolutionize the way people look at PITCHf/x data. Location is perhaps the most important attribute of a pitch, and the Pitcher Profiles allow you to examine the results of pitches across multiple spatial locations. PITCHf/x data has been available for five years, but we haven’t been able to examine it this way, at least publicly. (There are scouting services that provide this kind of data.) It was the first thing that a scout I talked to asked for.

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We roll out a new feature designed to help you dig deeper into how pitchers approach hitters and how hitters respond.

While reading message boards, sabermetric websites, or newspapers, you’ll often come across contentions like, “So and so is a good low-ball hitter.” While listening to the radio, you’ll be told that a player swings and misses a lot at pitches down and in. Or you might wonder: What’s the cause of a hitter’s dramatic change in performance from season to season? Is it something different about his approach? Is he less effective at getting to pitches in certain parts of the strike zone?

We’re here to help you answer those questions. Today, we’re rolling out a “beta” version of our PITCHf/x-driven Hitter Profiles. Essentially, they create sortable hot/cold zones for every hitter in “the PITCHf/x era” (2007-12). You can sort by AVG, SLG, the BP all-in-one offensive statistic TAv, Swings, Whiffs, and various types of balls in play. You can investigate where and how pitchers have attacked a hitter to see if that’s changed. You can sort by month or by year. You can do platoon splits. And you can switch between any of the pitches identified in the custom-classified Pitch Info LLC database that is also featured in our Pitcher Cards.

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Can knuckleballers like R.A. Dickey control the speed and movement of their knucklers depending on the count?

The knuckleball is a difficult pitch to hit because of its unpredictable movement. But few analyses have ever looked at another component of the knuckleball: its speed.

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Saber Seminar August 4-5

Sabermetrics, Scouting, and the Science of Baseball, a weekend seminar for the benefit of the Jimmy Fund, puts you up close with some of baseball’s top coaches, statisticians, scouts, doctors, and scientists. The seminar takes place on August 4 and 5, 2012 in Boston, MA, and is limited to 200 of baseball’s best fans.

Read the full article...

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