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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. It's backed up by 100 league-seasons of data, optimized through linear programming analysis.

☼ 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 Hitting and Pitching 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.

SIX OF THE TOP SEVEN XERA-RATED TEAMS MADE THE PLAYOFFS IN 2009! 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.

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

We've added a new category to our Various XERA Stat Sheets Quick Click Links - the Changes tab - to see how the game has changed, statistically, over the years.

Our favorite internet marketer, Amazon.com has great prices and quick service on thousands of fine products. You can take advantage of that, and help us out at the same time, by clicking the large icon, and buying whatever you want. There is no extra charge for going through this website to buy from Amazon.com. When you're finished shopping, you can use your browser's back button to get back to this page. XERA-Baseball.com is a free website. We want to keep it that way.

Many thanks to the wonderful folks at Amazon.com for making this possible.

Updated daily: Standings and Ranks through Thursday. This page shows detailed 2010 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 Runs2 tab has been moved to the Standings and Ranks workbook. See why runs² reflects so well on a team's record. The AL outperformed the NL by 16 games, and 70 runs, in inter-league competition for 2010.

Updated daily: We have complete 2010 XERA and standard stats on all hitters (non-pitchers) with 15 or more PA, and pitchers with 4 or more IP - 1011 players through Thursday. Click this (the Various XERA Stat Sheets Quick Click Link), and then just click the Hitters10 tab or the Pitchers10 tab. The complete stats involve extracting information from 3 databases. That information is then correlated to existing formulas on Excel spreadsheets, and sorted. This year, we're including the Scouting Report "Grades" from the start.

♦Updated twice weekly: Be sure to check out the 2010MLB tab in the Various XERA Stat Sheets section, as well, for XERA Rankings of each team, based on the collective XERAs of each team's players. Last update: Games through Monday, July 26, 2010. This feature now includes XERA grade ratings. Generally, speaking the grade ratings will be fairly consistent with the grade ratings in the Standings and Ranks section. Because XERA ratings are based on a normal distribution of accumulated player stats, not just actual runs and runs-allowed per game, it takes on additional meaning. When there is a significant difference between the two grades, look for the rankings to mutate toward the XERA grade over time.

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.

The Computer Annex of Sarasota has honored us (GillXL, LLC) with its “Excellence in Excel” award, again in 2010 - our third consecutive year of that honor. This year, new applications used in this XERA website, along with binomial and hypergeometric distribution worksheets were cited as the reasons for that honor. THANK YOU!

The same techniques that developed XERA and its related formulas, can be used very effectively in business, for cost analysis, quality control, estimating, etc. If you'd like 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.

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 or Text - whichever works best on your computer).

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) by Dwight Gill. 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. 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 . . .

1) 2010 MLB tab to see XERA, and plenty of conventional stats, for every 2010 major league team.

2) 2009 MLB tab to see XERA, and plenty of conventional stats, for every 2009 major league team.

3) 2008 MLB tab to see XERA, and plenty of conventional stats, for every 2008 major league team.

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

5) Hitters10 tab to see XERA, and plenty of conventional stats, for the hitters of 2010.

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

7) Pitchers10 tab to see XERA, and plenty of conventional stats, for the pitchers of 2010.

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

9) 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.

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

11) 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) . . .

12) 20W Seasons tab to see detailed XERA data, and standard stats, for all 805 20-game winners since the 1900 season.

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

14) 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.

15) Changes tab to see, by the numbers, how the game has changed over the years. Easily find the eras when pitching dominated the game, when power entered the game, when high batting averages were the norm . . .

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, and professionals, with useful, interesting and unique information. Click THIS to check out the answers to your early questions.