Home Page

Featuring: XERA - Baseball's statistical scouting report . . . and standard stats, too. XERA measures the productivity of any player or team by calculating a normal distribution of traditional baseball numbers.

SIX OF THE TOP SEVEN XERA-RATED TEAMS MADE THE PLAYOFFS! The ♦ symbol below (next to Updated twice weekly), starts the paragraph that shows you how to get to those ratings. Remember, these ratings are purely mathematical, not subjective.

We use, and highly recommend, Lee Sinins' Complete Baseball Encyclopedia (an unsolicited endorsement of my favorite source of baseball stats) as our reference for traditional baseball stats.

A radar gun is one of the most important tools a scout uses. The problem is those radar guns are quite cumbersome and expensive. Well, PocketRadar introduced a new less-than-5 ounce, very-easy-to-use unit that, literally, fits in a pocket! PocketRadar will clock a baseball from 120 feet away. Check out PocketRadar for details.

☼ If you're not yet familiar with XERA, we suggest clicking this link ►►► XERA Objectives to learn more. A free link to all the XERA formulas is at the bottom of that page.

☼ Then check out this link ►►► XERA History to see how well it's worked over the years - always using the SAME formulas. Feel free to compare XERA to actual data - no other sabermetric system evaluates the production of (offensive AND defensive) earned runs more accurately.

The Easy Money link was 7-for-10 in the 2009 post season . . . for the sixth straight year!

Updated daily: Standings and Ranks 2009 FINAL. This page shows detailed 2009 MLB standings, runs scored, opponents runs scored, and Runs² standings. We also show runs scored/allowed on a per-game basis. We have magic numbers for each division leader, and mathematically projected full-season wins for each team, from the beginning of the season. The Los Angeles Dodgers finished the 2009 season with the best ratio of runs scored to runs allowed (ahead of the New York Yankees by .024), and the best run differential per game (ahead of the Yankees by .04). The Yankees had the most runs scored per game (by .20 RPG over the Los Angeles Angels), and the Dodgers and Giants tied (exactly) for the fewest runs allowed per game. In 2009 interleague competition, the AL finished ahead of the NL by 24 games and 145 runs!

Congratulations to the 2009 World Champion New York Yankees (who also won the regular-season XERA title). We've added the complete 2009 regular-season XERA team reports for the Phillies and Yankees to the Various XERA Stat Sheets Quick Click Link. New York outscored Philadelphia, 32 to 27, in the World Series.

Updated daily: For complete 2009 XERA and standard stats on all hitters (non-pitchers) with 35 or more PA, and pitchers with 12 or more IP, (FINAL averages for 2009), click this (the Various XERA Stat Sheets Quick Click Link), and then just click the Hitters09 tab or the Pitchers09 tab. The complete stats involve extracting information from 3 databases. That information is then correlated to existing formulas on Excel spreadsheets, and sorted. The new Scouting Report "Grades" have been so well received, that we've updated that feature for each hitter and pitcher listed, daily.

♦Updated twice weekly: Be sure to check out the 2009MLB tab in the Various XERA Stat Sheets section, as well, for XERA Rankings of each team (updated twice weekly during the season), based on the collective XERAs of each team's players. The Yankees finished the 2009 regular season at the top of the XERA Rankings. They beat the Dodgers by .007. The Yankees had the best actual winning percentage in the majors, as well. Last update: FINAL, Regular Season, 2009. SIX OF THE TOP SEVEN XERA-RATED TEAMS MADE THE PLAYOFFS!

Scroll down to the list with the light-blue background (like this) to find more details about the various baseball stats reports on this website.

THIS symbol (throughout the text) will link to a variety of unique sabermetric material. These pages should provide a good overview of XERA and other useful baseball stats.

All the XERA reports are available in Excel format for FREE! The Excel files give you much more flexibility than the website - headings and sortability, for example. This is the way to transfer any of our spreadsheet links (or anyone else's) to your Excel files: Highlight what you want to transfer, by clicking and dragging, from your choice of a spreadsheet link. You can highlight the whole page, if you'd like. Copy that data by holding the Control key (Ctrl) and clicking C. Open your choice of an Excel worksheet. Place the curser in the top left cell of where you want to paste it. Hold the Alternate key (Alt) and click E. Then click S (by itself), then Enter (HTML).

We especially recommend Lee Sinins' Complete Baseball Encyclopedia (CBE), which is available, for a very reasonable price, on CD. It offers sortable stats (including Sabermetrics) on every player, every year. It also covers team and league records very well. Nearly every player stat on this XERA baseball site was derived from the (updated to include 2009 stats!) CBE (this is an unsolicited recommendation)! The CBE web address is www.baseball-encyclopedia.com.

We plan to offer updated information that was originally published in Mathematics in Baseball : The Science of the Art, by statistician Dwight Gill (a member of American Mensa) and sports writer Tad Reeve, just before the spring of 1989 and updated years later (XERA formulas are occasionally given small revisions to accommodate new information). XERA (eXpected Earned Run Average) is baseball's statistical scouting report. At the completion of the 2009 season, we had one-hundred league-seasons of data (1960-2009 AL and NL data) to verify XERA's accuracy and comprehensive nature. All the formulas were developed by Dwight Gill. Ron Shandler uses the original copyrighted formula in his annual Fantasy Baseball book. The original XERA book is no longer in print (because of its season-specific nature), but many of its concepts have been assimilated by major league teams - especially to statistically evaluate players. The New York Mets used then-updated XERA formulas during the 2004 season and after (although recent moves indicate they're not using it now!). The newer formulas have the same level of precision as the originals, and are easier to calculate. No "normalizing factor" is used in the current XERA formulas, the same equations are used every year. XERA invites comparisons to any other systems, or actual data. Click THIS to see why.

Click THIS to go to the page that introduces XERA - Baseball's Statistical Scouting Report:

The key to XERA: XERA (eXpected Earned Run Average) itself, is a provably accurate mathematical technique that measures all players (including hitters) on a scale that is familiar to every baseball fan - ERA or Earned Run Average. XERA not only measures the productivity of a player, much like Bill James's and Pete Palmer's methodologies, it also breaks down standard baseball stats into a "scouting report" that clearly demonstrates specific strengths and weaknesses of each player.

We'll also be showing a number of other baseball-related statistics, in addition to XERA. Our baseball statistics are based on the science that deals with the analysis and interpretation of numerical data, that uses mathematical theories of probability, not merely the data itself.

The Various XERA Stat Sheets Quick Link, and then the appropriate tab will lead to various XERA baseball reports . . .

2) 2009 MLB tab to see XERA, and plenty of conventional stats, for every team in the majors, this season.

3) 2008 MLB tab to see XERA, and plenty of conventional stats, for every team in the majors, last season.

4) 2007 MLB tab to see TEAM XERA, and plenty of conventional stats, for every 2007 major league team.

5) Hitters09 tab to see XERA, and plenty of conventional stats, for the hitters of 2009.

6) Pitchers09 tab to see XERA, and plenty of conventional stats, for the pitchers of 2009.

7) LeftRight tab to see how XERA makes it possible to determine the true (run-scoring) effects of the lefty/righty theory with final 2007, and 2006 stats.

8) Grt Hitters tab to see XERA demonstrate the skills of 400 of baseball's greatest hitters (career, all time) . . .

9) Grt Pitchers tab to see XERA demonstrate the skills of 263 of baseball's greatest pitchers (all pitchers with 150 wins or saves, career, all time) . . .

10) 20W Seasons tab to see detailed XERA data, and standard stats, for all 805 20-game winners since the 1900 season.

11) H Seasons tab to see how detailed XERA data, and standard stats, for 600 of the best hitting seasons in baseball history.

12) BarryB tab to see a detailed year-by-year XERA breakdown of Barry Bonds' incredible career - before 2000 and after . . . This guy got dramatically BETTER after he turned 35 . . . or was it the steroids? In response to a number of requests, we've added tabs for the the careers of Hank Aaron and Babe Ruth, as well.

Got questions (or suggestions, or comments)? Check it out on one of the pages of this website, or contact us at xerastats@gmail.com. We want to provide baseball fans with interesting and unique information. Click THIS to check out the answers to your early questions.

Check out Smart Toys for Grown Ups for lots of products that educate - including the Pocket Radar gun described above.

Do you need to optimize formulas or data for your business? GillXL, LLC can do it for you, as well as translate and reformat virtually any database file (even text-based) into a sortable Excel application. Please contact us at xerastats@gmail.com. This website and all its associated formulas and stats, are by GillXL, LLC personnel.

We rarely get any correct answers to our Baseball trivia page questions. See if you can find the answer to our most recent question. Lee Sinins' Complete Baseball Encyclopedia would make it easy (an unsolicited endorsement of my favorite source of baseball stats).