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 XERA-Baseball.com

Mathematics in Baseball: The Science of the Art

Featuring:   XERA - Baseball's statistical scouting report . . . and other baseball stuff you've never seen before! 

We've added a play-by-play of the biggest comeback in the history of post-season baseball. It's at the bottom of this page.

FINAL: Including team stats for every team in the majors.   Contact us at xerastats@gmail.com.  NEW  CONTACT  E-DDRESSp

☼  If you're not yet familiar with XERA, we suggest clicking this link ►►► XERA Objectives to learn more.

☼  Then check out this link ►►► XERA History to see how it's worked over the years - always using the SAME formulas.

The Easy Money Quick Click Link was  7 for 10, this season. Congratulations to the Philadelphia Phillies!

We have the detailed final stats for all the playoff teams in the Various XERA Stat Sheets Quick Click Link. Keep in mind that the stats from the one-game AL playoff DO count for the regular season.

Quick Click Links===>      Various XERA Stat Sheets      Standings and Ranks      Baseball trivia page       Easy Money        

FINAL, (Standings and Ranks) through 2008.

FINAL: Complete 2008 XERA and standard stats for 511 hitters and 513 pitchers . . .

. . . just click the Hitters08 tab or the Pitchers08 tab in the Various XERA Stat Sheets Quick Click Link.

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. 

Updated daily: Check out the Standings and Ranks to see detailed 2008 MLB standings, runs scored, opponents runs scored, and Runs2 standings. We have magic numbers for each division leader, and mathematically projected full-season wins for each team, from the beginning of the season. That same page also ranks all teams in order of expected win-loss percentages based on runs2, and lists each team, in order, in actual runs per game, opponent's runs per game, and run differential per game.

2008 Leaders:s          1) Best ratio of runs scored to runs allowed = Chicago Cubs.           2) Most runs scored per game = Texas Rangers.

3) Fewest runs allowed per game = Toronto Blue Jays.             4) Largest positive run differential per game = Chicago Cubs.

Notes: The Texas Rangers have also allowed the most runs per game . . .  The AL had 46 more wins, and 235 more runs scored, than the NL, in inter-league competition in 2008

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. 

For all the XERA formulas, click THIS.

All the XERA reports are now 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 file. 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). 

Yes, this is a unique baseball site. We also recommend www.baseball-reference.com and www.retrosheet.org as outstanding baseball references. 

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 2008 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 (eXpected Earned Run Average) is baseball's statistical scouting report. Ninety-four league-seasons of data verify its accuracy and comprehensive nature. All the formulas were developed by Dwight Gill. Ron Shandler uses the basic 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 started using the updated XERA formulas during the 2004 season. 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) Runs2 tab to see why runs2 reflects so well on a team's record. 

2) 2007 MLB tab to see TEAM XERA data for every 2007 major league team.

3) Teams08 tab to see XERA, and plenty of conventional stats, for every team in the majors, this season.

4) Hitters08 tab to see XERA, and plenty of conventional stats, for the hitters of 2008.

5) Pitchers08 tab to see XERA, and plenty of conventional stats, for the pitchers of 2008.

6) 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. 

7) Grt Hitters tab to see XERA demonstrate the skills of over 300 of baseball's greatest hitters (career, all time) . . . 

8) Grt Pitchers tab to see XERA demonstrate the skills of over 250 of baseball's greatest pitchers (all pitchers with 150 wins or saves, career, all time) . . . 

9) 20W Seasons tab to see detailed XERA data, and standard stats, for all 805 20-game winners since the 1900 season.

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

11) 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.

12) We have the Arizona Diamondbacks (DBacks), Atlanta Braves (Braves), Boston Red Sox (Red Sox), Chicago Cubs (Cubs), Chicago White Sox (White Sox), Cleveland Indians (Indians) (Dwight's former home town), Los Angeles Angels (Angels), Los Angeles Dodgers (Dodgers), Milwaukee Brewers (Brewers), Minnesota Twins (Twins), New York Mets (Mets), Oakland A's (A's), and Philadelphia Phillies (Phillies), and Tampa Bay Rays (Rays) - each team is complete, through the 2008 season, with detailed XERA, and standard, stats.. 

Play-by-play of the biggest comeback in the history of post-season baseball.
 

Saturday, October 12, 1929. Philadelphia A’s leading the Chicago Cubs, 2 games to 1. Cubs leading, 8 – 0, in this game, after 7 ½ innings. 

 
ATHLETICS 8TH: 
LF Al Simmons homered;                                 
1B Jimmie Foxx singled to right; 
RF Bing Miller singled to center [Foxx to second]; 
3B Jimmy Dykes singled to left [Foxx scored, Miller to second]; 
SS Joe Boley singled to right [Miller scored, Dykes to third]; 
  George Burns batted for Eddie Rommel; 
Burns popped to shortstop; 
2B Max Bishop singled to center [Dykes scored, Boley to third]; 
  Art Nehf replaced Charlie Root pitching; 
CF Mule Haas hit an inside the park homer to center [Boley scored, Bishop scored]; 
C Mickey Cochrane walked; 
  Sheriff Blake replaced Nehf pitching; 
Simmons singled to left [Cochrane to second]; 
Foxx singled [Cochrane scored, Simmons to second]; 
  Pat Malone replaced Blake pitching; 
Miller was hit by a pitch [Simmons to third, Foxx to second]; 
Dykes doubled to left [Simmons scored, Foxx scored, Miller to third]; 
Boley struck out; 
Burns struck out;
 
10 R, 10 H, 0 E, 2 LOB.  Cubs 8, Athletics 10 (the final score).

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. 

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