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    Thursday, February 04, 2010

    BtB "Sabers" complete

    Today we posted the results of the final category in the BtB Sabermetric Awards. This was the first time I've tried to organize anything quite on this level in the sabermetric community, but I'm extremely pleased with how it all went. Hopefully, we can do it again next year. Here are the award result posts:


    1. Best Novel Research Article/Project
    2. Best Applied Research Article/Project
    3. Best Primer or Review Article
    4. Best Commentary Article
    5. Best Writing/Research Website
    6. Best New Online Resource
    7. Best Writer/Researcher

    Onward to the next project! I still have this minor league thing I want to get finished, and after that it will probably be time to start working up a team projection for the Reds. I'm pleasantly optimistic right now about their chances to top 0.500 this season...

    Thursday, January 28, 2010

    A Sabermetric Library resource

    A while back, I posted a preliminary topic list for a baseball class I was working on at BtB. I've continued to add to this list and flesh it out as time as gone on. I thought I'd re-post it here as a more or less permanent storage place....at least until it becomes to unwieldy. At some point, I will try to go through and format it to be more pretty, but for now it's functional and that's about all I'm interested in.

    Baseball physics, biology, and psychology

    Alan Nathan's Terrific physics resource: http://webusers.npl.illinois.edu/~a-nathan/pob/

    How can we describe the different pitches that are thrown?

    Why do breaking pitches break?

    Physics of baseball-type videos:

    How do hitters make contact with a baseball (neuroscience-wise)? What happens when the ball hits the bat (physics)?

    How do fielders track down fly balls?

    Myth, or Reality

    Do players go through hot & cold streaks?

    • Psychology of Baseball by Stadler, chapter 5 & 6
    • The Book by Tango et al, chapters 1 & 2
    • Dave Cameron

    How valuable are batter/pitcher matchup numbers? And other small sample size questions.

    • The Book by Tango et al, chapters 1, 3
    • Baseball Between the Numbers by BPro, chapter 9-2
    • Bridging the Statistical Gap by Seidman, chapter 4
    • Regression by Studeman
    • Regression by Wyers: One, Two, and Three
    • Books on randomness: Fooled by Randomness by Taleb. Drunkard's Walk by Mlodinow
    • Pizza Cutter on how many PA's you need to get reliable hitter or pitcher statistics.

    Do clutch hitters exist?

    • The Book by Tango et al, chapters 1,4
    • Baseball Between the Numbers by BPro, chapter 1-2
    • Bridging the Statistical Gap by Seidman, chapter 6

    How did steroids affect the on-field game of baseball? Did they?

    Fielding isn't really that important, is it?

    Are scouts being replaced by statistics?

    • Moneyball by Lewis, chapter 2 (draft board discussions)
    • Baseball Between the Numbers by BPro, "extra innings" by Perry
    • The Baseball economist by Bradbury, chapter 11
    • Something on the Fan Scouting Report, maybe my thing:
    • Perry at BPro

    Do umpire strike zones really vary all that much?

    Speed guys add as much value with their legs as power guys do with their bats, right?

    • Anyone have a good article on this? Ideally using something like Dan Fox's EqBRR? I think John Walsh might have done some speed stuff at some point along with his arms stuff...? I don't want to just do SB's, it's gotta be all baserunning.

    Players today just aren't as good as players in the past.

    • Between the Numbers by BPro (Silver's article has flawed methods, but good discussion)
    • THT Annual 2008(?) by Gassko (All-time pitcher rankings, adjusted for era difficulty)
    • Dan Fox: One and Two
    • David Gassko on evaluating past eras: One, Two, and Three
    • Error rates as an indicator

    What we want most from our pitchers is consistency, right?

    Are curveballs bad for young arms?

    • Dun et al. 2008 in American Journal of Sports Medicine: Curveballs not more stressful than fastballs (PDF in my database)

    Do home teams really have a home-team advantage? If so, why?

    • Stadler, 2007, Psych of Baseball, pp.174-179.

    Is there such a thing as the sophomore slump? Why?

    Evaluating Value

    Why can't we just judge hitters on AVG/HR/RBI?

    Why can't we just judge pitchers by W/L record, ERA, or save totals?

    How can we assess a player's fielding?

    How can we best estimate a players impact on scoring runs? Winning?

    Judging trades and free agent signings: how much money is that player worth, dollar-wise?

    • Something on Runs to Wins to $, perhaps by Tango?
    • Cameron
    • Wang in By the Numbers, prospect values
    • Wang on Santana, prospect values
    • Wang at draft pick values: One and Two
    • Wang: Hardball times 2009 Annual, expansion of prospect values
    • Diamond Dollars by Gennaro, chapters 4, 5, 6, 7 & 8

    How much does home park matter? How can we deal with that problem?

    How can we evaluate managers?

    • MGL in Hardball Times 2009 Annual
    • Gassko in Hardball Times 2008 Annual

    How should we decide end-of-season awards? Hall of fame?

    • Not sure on articles (recommendations?). Discussion would likely involve context-neutral vs. context-sensitive statistics, average vs. replacement baselines, and for hall of fame, peak vs. accumulated value. This might end up being a good way to pitch the player value discussions rather than a topic in and of themselves.
    • Neyer/James Guide to Pitchers - Cy Young Predictor
    • Sky Andrecheck on award prediction
    • David Gassko: THT 2010 Annual and This
    • Sky A on writer biases

    Game strategy

    When is sacrifice bunting a good idea?

    • Baseball Between the Numbers by BPro, chapter 4-2. (selected as a contrast to...)
    • The Book by Tango et al, chapter 1, 9
    • Red Menace:
    • MGL from 2009

    Can we really just use average run- or win-values to determine game strategy?

    How can we best use our relievers?

    • The Book by Tango et al, chapter 8
    • Baseball Between the Numbers by BPro, chapter 2-2

    What is the best way to make out a lineup?

    • Baseball Between the Numbers by BPro, chapter 1-3
    • The Book by Tango et al, chapter 5

    When should we steal bases?

    Team-level analysis and front office strategy

    This part could definitely use expansion, both in topics and article.

    How can we best estimate team winning percentages?

    Should cities build stadiums for their local sports teams?

    • Baseball Between the Numbers, chapter 6-2
    • Anyone know a good original economics paper on this? I think I remember reading something by Zimbalist, but haven't found it yet.

    How do teams make money?

    • Diamond Dollars by Gennaro, chapters 2 & 3
    • Between the Numbers by BPro, chapter 6-1

    Do teams cycle?

    • Between the Numbers by BPro, chapter 8-3
    • Anything else on this issue?

    How do players age?

    • I'm thinking about using the Bradbury article & the Birnbaum/Tango responses as a way to discuss sampling bias.

    General summaries of sabermetric ideas

    Other cool things

    Friday, January 08, 2010

    Current activities

    I finally finished a post at Red Reporter that I've been working on for almost a month (and planning since September). I'm not sure the result is as fabulous as all of that would imply, but it's an investigation of the degree to which the Reds were hurt by playing time shortfalls in it starters compared to simply failing to perform when healthy. Punchline: aside from Volquez (who accounts for 35% of the overall ~7 WAR shortfall), mostly it was simply a failure to perform.


    At BtB, I'm managing the Sabermetric Writing Awards. I thought of the basic idea for the awards while working on my baseball class (more on that in a sec). The BtB crew were very enthusiastic about it when I pitched it to them, and in the internal discussion, the idea expanded from ~3 categories to the 7 we are currently running. Nominations are going pretty well, though I think there is a bias toward stuff done over the past few months. Still, I've already seen a bunch of stuff that I had missed, and that's sort of the main point.

    The baseball class, which I announced here, starts on Monday. I'm a bit anxious about it, but I think I'm about as well-prepared for it as I can be, and I'm excited to get started. I'm perhaps naively hoping that the students will follow my obsession in player valuation, but we'll see. First thing I'm going to do is have them pick the topics for the semester. It will probably be the case that this class will be the extent of what I can do baseball-wise for at least the first half of the semester. But one of my classes ends at spring break--just as spring training really gets underway--so that should help.

    I also wanted to link to my post on the Hall of Fame ballot from December. It's gotten some decent play (Neyer link, for example), and apparently Sky did something similar at ESPN this week. The one guy I left off of my ballot, Dawson, is the guy who got in--but I have no problem with that. What I do have a problem with is all of the deserving individuals who should have gotten in before Dawson.

    Tuesday, December 08, 2009

    Reds Season Review

    Cincinnati RedsImage via Wikipedia

    I completed a "sabermetric" (I still don't like that word, but I've become resigned that I have to use it to be understood) review of the 2009 Cincinnati Reds at Red Reporter. Here are the parts:
    Did some fun things here:
    • The introduction piece has a nice historical angle to it that I really like.
    • The position-by-position run above average plots in the position player pieces were a nice way of summarizing the overall team performance.
    • The hitting info included full baserunning from baseball prospectus pull park corrections, so I think it's the best available right now for Reds players.
    • The fielding info incorporated fan scouting data in a semi-crude, but still useful way. Again, I think it's the best available for Reds players.
    • I also really like the introductory graph for the pitcher piece. People can complain about one metric vs. another, but when all three approaches show the same thing, I think it paints a pretty strong picture.
    Well, that's enough patting myself on the back for one day. It's exam week and I have to figure out what I'm going to do if school gets snowed out tomorrow.

    Friday, October 23, 2009

    BtB Power Ranking Season Reviews

    Earlier this week, I completed my season-by-season reviews of all MLB teams. Fun exercise. Here they are:



    Here's what I wrote about the Reds:
    I root for laundry of this color. It was a rough season, but after dwelling in the basement for much of August and early September, a hot-hot-hot streak at the end of the year got them up to 26th place in the rankings and 4th place in the division over the last few weeks. cW% was substantially lower than true W%: 0.441 vs. 0.481. The reason was a slight underestimate of runs scored, and a slight overestimate of runs allowed, plus the fact that even straight-up Pythagoras had the Reds as a bit lucky. This was quite possibly the best fielding team in the National League, but their pitching was just a tad below average. And that, coupled with an offense that flirted with the 0.300 wOBA line for most of the year, spelled disaster. So, for the 9th consecutive season, Reds fans are wondering if next year will be the year they finally win more than they lose again.
    And here are the final 2009 Beyond the Box Score Power Rankings. I really enjoyed doing that series this year, even if occasionally was a bit contentious (:cough: Giants :cough:). Very well received, and might go even further next season if we can keep it going. Just need to figure out some strength of schedule adjustments.

    Now that I'm done with that series for a while, I have some Reds work I'm planning. Look for a recap of the 2009 season at Red Reporter sometime next week if all goes well. I also have a minor league study about half written up at BtB. Stay tuned...

    Barry Larkin for the Hall

    I finished a piece last night, running today at Red Reporter, arguing for Barry Larkin's induction into the Hall of Fame. Response has been very positive, with links from BBTF (Repoz) and Rob Neyer, among others. Everyone seems to think that Larkin should get in (as I show, that's clearly supported by the data), but some think he might have some trouble. Hopefully he'll get in before guys like Jeter start appearing on the ballot.

    Friday, October 02, 2009

    Regarding Mudgate: I will read from a prepared statement

    I did it. It's all my fault. Yes, the attendant rubbed the balls correctly and thoroughly. But I cleaned them. With soap. And a Snuggie.

    I deeply regret my actions and apologise to my family, friends, and the baseball community. I will accept any consequences that MLB/Dave Duncan/Tony La Russa deem appropriate.

    This concludes my statement. On the advice of my lawyer, I will not be taking questions.

    Thank you.
    Justin

    Monday, September 28, 2009

    Reds offense

    I posted a short article on the Reds' offense at Red Reporter. Excerpt:

    As a result, in many cases we like to look at context-neutral offensive stats. There are a number to choose from, but my personal favorite is the one I calculate for Beyond the Boxscore: I estimate runs scored based on linear weights of offensive events (wRC at fangraphs) and baserunning stats from Baseball Prospectus (EqBRR). Based on this measure, after park corrections, through Sunday's games, the Reds trail the Astros 634 runs to 606 runs. Why? Despite their park disadvantage, the Astros rank ahead of the Reds in AVG, OBP, and SLG, as well as baserunning (0 RAA for Astros vs. 9 runs below average for the Reds). The Reds have just been a bit "lucky" in terms of how their offensive events have translated into runs, whereas the Astros have been a tad "unlucky."

    The games disparity mentioned above still applies, so you can convert those totals to a rate stat. I prefer wOBA, which has the Reds trailing the Astros 0.319 vs. 0.309 (wOBA uses the same scale as OBP, but properly weights all offensive events--in this case, I'm even including EqBRR baserunning). The Reds rank ahead of only San Francisco by wOBA.