tag:blogger.com,1999:blog-23241716.post3760126038459900707..comments2023-07-09T11:23:36.355-04:00Comments on On Baseball & The Reds: Player Value, Part 3a: Fielding Performance Estimatorsjinazhttp://www.blogger.com/profile/07697776280178146413noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-23241716.post-25491082403219639102007-12-17T12:00:00.000-05:002007-12-17T12:00:00.000-05:00Thanks, Lee! Glad you've found it useful! -jThanks, Lee! Glad you've found it useful! -jjinazhttps://www.blogger.com/profile/07697776280178146413noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-84081540234027857822007-12-16T23:45:00.000-05:002007-12-16T23:45:00.000-05:00Justin, I just found your site recently and it's e...Justin, I just found your site recently and it's excellent. This is the best summary of fielding statistics I have seen anywhere. I play around with fielding stats quite a bit so this is a great resource. <BR/><BR/>LeeLee Panashttps://www.blogger.com/profile/17148118898954670307noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-79387519168008017432007-11-13T15:51:00.000-05:002007-11-13T15:51:00.000-05:00Thanks for dropping by, Shane. I'm excited to see...Thanks for dropping by, Shane. I'm excited to see what you folks come up with. It's great to have an academic like yourself who is so open and interested in feedback from those outside of the "inner circle." <BR/>-Justinjinazhttps://www.blogger.com/profile/07697776280178146413noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-90922806129870928102007-11-13T14:27:00.000-05:002007-11-13T14:27:00.000-05:00Thanks for the mention and link! I am hoping to g...Thanks for the mention and link! I am hoping to get some more work done on SAFE after the end of the semester, and comments are appreciated.Shanehttps://www.blogger.com/profile/05264569836876117533noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-16446417843880224412007-11-07T01:04:00.000-05:002007-11-07T01:04:00.000-05:00Chris--thanks for the kind words, and the condolen...Chris--thanks for the kind words, and the condolences. Both are very much appreciated. :) -jjinazhttps://www.blogger.com/profile/07697776280178146413noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-86017014319760814192007-11-06T19:31:00.000-05:002007-11-06T19:31:00.000-05:00This was really a great article. Fielding stats se...This was really a great article. Fielding stats seem to be the most...divisive, for lack of a better word, among people that enjoy using advanced statistics in analyzing baseball. I will definitely recommend this to people who get a little lost trying to figure things out. <BR/><BR/>Also, I'm sorry Dusty Baker is your manager.ChrisV82https://www.blogger.com/profile/02137082202640849864noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-36351663113716690452007-10-30T17:17:00.000-04:002007-10-30T17:17:00.000-04:00Also good to see that, in general, those weighting...Also good to see that, in general, those weightings match the relative sizes of my regression coefficients pretty well. Though there might be some small differences when I use your actual values.<BR/>-jjinazhttps://www.blogger.com/profile/07697776280178146413noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-73954682343125751712007-10-30T17:12:00.000-04:002007-10-30T17:12:00.000-04:00Tango--thanks for that link! I tried to find thos...Tango--thanks for that link! I tried to find those weightings, but wasn't successful. -jjinazhttps://www.blogger.com/profile/07697776280178146413noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-51809493462479598502007-10-30T15:00:00.000-04:002007-10-30T15:00:00.000-04:00The position-specific weights are here:http://www....The position-specific weights are here:<BR/>http://www.insidethebook.com/ee/index.php/site/comments/2007_fans_scouting_report_results#11Tangotigerhttps://www.blogger.com/profile/11864323151591103655noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-36349042814150536462007-10-28T00:38:00.000-04:002007-10-28T00:38:00.000-04:00@MB, thanks! I think the comparison stuff should ...@MB, thanks! I think the comparison stuff should be interesting too, hopefully I'll get that up over the next night or two.<BR/><BR/>@Dan, speed of ball and type of ball is, unfortunately, just qualitatively described as far as I know. So the stringer inputting the data would note the coordinates of where a ball lands on the field, but generally would just categorize speed as either fast, medium, or slow, and would categorize ball type as grounder, fly ball, or line drive. BIS has recently included a fourth ball type category for their data, "fliners," for balls that are in between fly balls and line drives.<BR/><BR/>But that's about as sophisticated as it gets. I've heard that STATS has several stringers inputting each batted ball type, so there's some control for consistency, at least. But it's not particularly sophisticated.<BR/><BR/>What they probably <I>should</I> be doing is tracking both where a ball lands as well as how long it took to get there. That would allow us to back-calculate trajectory (like at hittracker.com), and would get around all of the problems of qualitative estimates of how hard a ball was hit, etc. But I don't think anyone is doing that right now, unfortunately. <BR/><BR/>The other big piece of info we could use is information on positioning of each fielder. But that would require the data to be collected via something other than TV broadcasts, which for the time being probably isn't possible.<BR/>-jjinazhttps://www.blogger.com/profile/07697776280178146413noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-37256087548076149522007-10-27T17:13:00.000-04:002007-10-27T17:13:00.000-04:00I've always wondered this... do you know how the s...I've always wondered this... do you know how the speed of the ball, angle (and therefore vector), and those kinds of variables are tracked without the kind of technology that mlb pitch f/x uses?<BR/><BR/>Also, how are play by play data applied to some of these stats?danhttps://www.blogger.com/profile/11635462248852203362noreply@blogger.comtag:blogger.com,1999:blog-23241716.post-36787233389824895382007-10-27T13:46:00.000-04:002007-10-27T13:46:00.000-04:00Great overview of fielding evalation, Justin. This...Great overview of fielding evalation, Justin. This article should be the first thing pointed to in these forum/blog debates about how to evaluate fielders. In fact, it should be passed around to every announcer, too!Anonymousnoreply@blogger.com