How HitTracker Works | Ballparks | Atmospherics | Glossary | Highlight Homers | Missing Observations | Links | Feedback | Bio | Blog | Hit Tracker Demo | HR Derby | 3 Types of HR's      - Heater Magazine -      - BallHawk - Last Updated: December 29, 2008, 12:56 am PST
Sept. 28, 2008... Worth the Wait! We've got an accurate spot on Adam Dunn's home run from Saturday, Sept. 27, and it was a big one: 497 feet, the longest of 2008! Important Note: Improvements to the Hit Tracker analysis engine have been completed, and will be reflected on the site after the season is complete. Home run observations from 2006-08, including the much-anticipated 2008 Home Run Derby, will be re-analyzed with the updated ("Hit Tracker 2") engine and posted. Changes include a minor tweak to the lift coefficient and spin model, and an adjustment to the drag coefficient that will affect the calculated values for altitude impact. Other improvements in Hit Tracker 2 will include added detail on ballpark diagrams (e.g. warning track outlines), renovations to Kauffman Stadium, Progressive Field and other parks, and the addition of New Yankee Stadium and Citi Field. Welcome to Hit Tracker - detailed trajectory analysis which provides unprecedented accuracy in home run measurement... For more detailed data on a particular home run, send a message to grybar@hittrackeronline.com Be sure to check out Heater Magazine for in-depth fantasy baseball statistics and commentary. Hit Tracker provides data for the Slugfest page each week in Heater! If you are a member of the media, and would like to get detailed information on a homer in time for your deadline, send a message to grybar@hittrackeronline.com and we will do our very best to accommodate you! If you are involved in home run distance estimation for a MLB club, and would like to learn how you can provide your fans with more detailed and accurate information in less time than it takes a home run hitter to touch home plate, contact me at grybar@hittrackeronline.com

3 Types of Home Runs, and the players who hit / allowed them.
A new feature for Hit Tracker is the classification of all home runs into one of three categories, based on how far past the fence they flew.  The categories are:
 
- "Just Enough" or "JE", which means the ball cleared the fence by less than 10 vertical feet, OR that it landed less than one fence height past the fence. These are the ones that barely made it over the fence...

- "No Doubt", or "ND", which means the ball cleared the fence by at least 20 vertical feet AND landed at least 50 feet past the fence. These are the really deep blasts...

- "Plenty", or "PL", which is everything else.

The league averages for 2006 were 27% JE, 55% PL and 18% ND.  Hitters who amassed a significantly larger than average percentage of JE homers may have benefitted from good fortune, and thus may be ripe for a regression towards the league average this season.  Hitters who tallied significantly fewer JE homers than the league average may have suffered from bad luck, and thus might be expected to do better in 2007.
 
In 2007, Hit Tracker will be tracking all long fly balls in addition to homers, which should allow for a more comprehensive analysis of which hitters were lucky or unlucky with respect to the long ball, either due to the impact of wind, or due to random chance.


The data are located here.

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