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Tangotiger Blog

A blog about baseball, hockey, life, and whatever else there is.

Data

Data

Thursday, December 01, 2022

Savant Historical Break Values updated

Prior to 2017, the break values were calculated based on the ball being 40 feet from home plate.  Starting in 2017, it's based much closer to the actual release point.  From 2017-2019, it's the actual release point (an average of 54.5 feet).  From 2020, it's fixed to roughly 54.134 feet from home plate.  We've recalculated the 2008-2016 break values (which are currently only accessible via the csv download on Savant) so it matches a fixed 54.5 foot standard. This will help in being able to better compare pre-2017 to since-2017.

Monday, April 25, 2016

StatCast Benchmark data

?Tony gives you some benchmarks, including noting the all important "null" group, which can skew any analysis.

(1) Comments • 2016/04/26 • Data

Tuesday, February 16, 2016

Inside Fangraphs

?An inside-look at Fangraphs

I've dealt with David as much as I've dealt with anyone in the sports world, and he's easily one of the most generous and honest people around.  I'd have no qualms being a partner with him, or being his subordinate, or him working for me.  Just an ideal team player, regardless of what role on the team he'd play.

Saturday, February 13, 2016

Fans Scouting Report 2015 at Fangraphs

The latest season is over at Fangraphs.  You can see it at the player pages, ?the advanced league pages, on its own page.  David does a fantastic job at laying out a site, to slice and dice the data across its pages. 

If ever I'd do a hockey site, I'd use Fangraphs as a model, while trying to incorporate some cool features over from Hockey-Reference as well.

(2) Comments • 2016/02/15 • Data Fielding

Friday, January 29, 2016

Data from Venezuela

?Octavio is your source for sources.

Friday, January 01, 2016

Baseball’s craziest game

?This is the writeup, of which you will be enthralled, especially if you were born in the 1970s or earlier.

This is the boxscore:

http://www.baseball-reference.com/boxes/CIN/CIN198607220.shtml

http://www.fangraphs.com/boxscore.aspx?date=1986-07-22&team=Reds&dh=0

http://www.retrosheet.org/boxesetc/1986/B07220CIN1986.htm

And this is the game:

https://www.youtube.com/watch?v=dljM3PyIiXI

I'd love to see a group come together to create a full pitch-by-pitch account of this game.

(4) Comments • 2016/01/01 • Data History

Monday, December 28, 2015

Tangotiger Wiki - now in Archive Mode

There was a software upgrade that killed the wiki on my site.  ?I put out a plea to save that wiki, a wiki that so many contributed toward.  Thanks to the hard work and incredibly fast turnaround of Montrealer Alex Marcotte, @Hamburghost, the wiki has been saved and can be found in archive-mode here:

http://tangotiger.net/wiki_archive/

I'm very proud to be part of a community that shares so much based just on our common passion.  And it's great that Alex is a part of this community.

Friday, November 20, 2015

Crowd Sourced Free Agent Tracker - 2016

?Fangraphs does a terrific service to the community when they run this.

Aspiring saberists: now, ESPN also does a terrific service to the community with their list (especially since it goes back to 2006.  I suspect it's only a couple of guys establishes the prices, but they seem to do a good job.  So, aspiring saberists: compare the two.  I'd like to see where one does better than the other, are they biased in any way.

(6) Comments • 2015/11/21 • Data

Thursday, July 09, 2015

Baseball Savant profile

?Terrific profile on Daren @darenw.  One of the very best things about the saber community is how much they are(*) so willing to share their expertise.

(*) I guess I should say "it is... its" and not "they are... their".  Huh, just noticed:  "it's... its", and "they're... their".

Friday, November 21, 2014

Portfolio of research

I always advise everyone who asks to ABSOLUTELY have your own website.  While Fangraphs and Hardball Times and BPro are all wonderful outlets, you need a direct path to your own work, as it becomes your portfolio.  I point to Alan's site as a great example.  Bryan Cole did such a thing.  I don't think I've updated Tangotiger.net in six years, maybe longer.  But it still gets plenty of traffic.  ?

(4) Comments • 2014/11/24 • Data

Monday, November 17, 2014

Replay Sites

?From Baseball Savant, and Replayometer.  If you have other sites, please post below.

(10) Comments • 2014/11/17 • Data

Wednesday, November 12, 2014

Fangraphs Free Agent Tracker

Terrific job by the gang at getting this up and running.  ESPN also has a good one, especially for historical results.?

(2) Comments • 2014/11/12 • Data MLB_Management

Monday, November 10, 2014

StatCast data

Stephen collected all the StatCast data for you.

To improve the results, he should show the data as data, not as an image.  He should also hyperlink the data back to the video.

He noted the negative first step by Pence.  I seem to remember the announcer on StatCast making mention of that.  I think he went back to the bag after the catch?  Or something like that?  I don't remember.

And of course, the bane that is "acceleration", which I won't rest until its calculation is eradicated from all discussion, past, present, and future. 

***

One thing about the average lead for the runner that's not clear: is it measured from center point, lead foot or trailing foot?  Because if you follow some of the tracking, you will sometimes see the runner not touch the bag according to StatCast, and it's clear in those cases that they are tracking the left foot, where it goes in front of the bag, while the right (outer) foot touches the bag.

***

It's also clear that alot of this data is going to be of very dubious (dangerous) use without proper context and filtering.  For example, a scout recording home to first time will throw out some of the runs, if it's obvious the runner is not going all-out.  Visually, it's obvious.  And given the data presented, it won't be obvious.  So, the analyst has to be VERY careful, given the limited amount of data and context provided.?

Friday, October 10, 2014

If we don’t distinguish singles as bunt, infield, outfield, shouldn’t we have a catchall for BB+HB?

We rollup bunt, infield, outfield singles into singles.  We rollup singles, doubles, triples, HR into hits.?  We rollup BB, HB, hits into times on base.

To the extent that you show BB/PA, when would you NOT want it to be BB+HB per PA?  Wouldn't you predominantly want to include HB with walks far more often than keep them separate?

In an ideal presentation, it would be BB-IBB+HB per PA-IBB.  And as a subcategory, if you want to do BB/PA, then fine, do that.  But only after presenting the more ideal metric first.

(17) Comments • 2014/10/17 • Data

Thursday, August 28, 2014

New Fangraphs Leaderboards

?With the 50/50 blend of pitching WAR now an option!

(13) Comments • 2014/08/30 • Data

Thursday, August 14, 2014

Baseball data tutorials

Love the name of the site.  Here are a couple of useful ones

One little note: when it comes to join, consider doing outer joins, unless you are 100% sure that there is no gap in the data.  Then you have to deal with the nulls, which is fine. However, some databases have problems with outer joins, so, just be aware if things run slowly, it may be because of that.

(1) Comments • 2014/08/16 • Data

Tuesday, July 22, 2014

That data cannot possibly be accurate

?See post #19, my first reaction to it, others telling me that this is how baseball reference is reporting it, and my quick comment, which I'll reproduce here:

I just looked at two years:

http://www.baseball-reference.com/leagues/split.cgi?t=b&year=2013&lg=MLB#hitlo

http://www.baseball-reference.com/leagues/split.cgi?t=b&year=2008&lg=MLB#hitlo

First thing to note is that this is not a LHH issue, but LHH AND RHH.

Secondly, the frequencies have changed between pull and up-the-middle.

Thirdly, note the success rate is higher for up-the-middle in 2013 than 2008.

So, I’m not sure that everything is directly comparable.  I’d guess that the record keeping or method of recording has changed sufficiently to not allow for simple conclusions.

***

An aspiring saberist can take it from here.

(19) Comments • 2014/07/23 • Data

Thursday, June 26, 2014

BaseRuns

Dave is noting that Fangraphs is now offering BaseRuns at the team level.?

Friday, June 20, 2014

Hidden Features of Fangraphs

?I'm a huge fan and supporter of Fangraphs,  And that the brains behind the site is a super nice guy, it's a real pleasure to link to the site and point out some really cool stuff.

Friday, May 30, 2014

Even though AL has more talent per team, the NL draws more fans per game

?Courtesy of Matthew Gross:

(5) Comments • 2014/06/02 • Data
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THREADS

December 01, 2022
Savant Historical Break Values updated

April 25, 2016
StatCast Benchmark data

February 16, 2016
Inside Fangraphs

February 13, 2016
Fans Scouting Report 2015 at Fangraphs

January 29, 2016
Data from Venezuela

January 01, 2016
Baseball’s craziest game

December 28, 2015
Tangotiger Wiki - now in Archive Mode

November 20, 2015
Crowd Sourced Free Agent Tracker - 2016

July 09, 2015
Baseball Savant profile

November 21, 2014
Portfolio of research

November 17, 2014
Replay Sites

November 12, 2014
Fangraphs Free Agent Tracker

November 10, 2014
StatCast data

October 10, 2014
If we don’t distinguish singles as bunt, infield, outfield, shouldn’t we have a catchall for BB+HB?

August 28, 2014
New Fangraphs Leaderboards