Batting Glossary

Sample Batting Line

Year    PA  AVG  OBP  SLG  OPS+  RC RC/27  OWP  EQA  EQR   WAR   WAA   WAP
--------------------------------------------------------------------------
1954   509 .280 .322 .447  105   63  4.67 .541 .270   64   2.1   0.6  -0.4

PA	Plate Appearances
	AB + BB + HBP + SH + SF
	Any missing value is replaced with zero.

AVG	Batting Average
	H / AB

OBP	On-Base Percentage
	(H + BB + HBP) / (AB + BB + HBP + SF)
	Any missing value is replaced with zero.

SLG	Slugging Percentage
	TB / AB

OPS+	Adjusted On-Base Plus Slugging
	On-Base Percentage plus Slugging Percentage adjusted for league and 
	park.  A figure of 100 is considered league-average.

RC	Runs Created
	An estimate of the number of runs a player created given his 
	offensive statistics.  Bill James has devised 24 different Runs
	Created formulas, depending on the available statistics in a given
	year.

RC/27	Runs Created Per 27 Outs
	An estimate of the number of runs per game a team made up of nine
	of the same player would score.

OWP	Offensive Winning Percentage
	An estimate of the winning percentage a team made up of nine of the
	same player would attain, given average pitching and average 
	defense.

EQA	Equivalent Average (click here)

EQR	Equivalent Runs (click here)

WAR	Wins Above Replacement (click here)

WAA	Wins Above Average (click here)

WAP	Wins Above Position
	Similar to WAA above.  Position EQR Per Out is calculated using a 
	five-year average at the position, centered on the given year.  Due
	to lack of information, outfield positions are combined rather than 
	separated.

Pitching Glossary

Sample Pitching Line

Year     IP   W   L  PCT  SV   ERA  ERA+  ERC  ERC+  PR+  PWP   WAR   WAA
-------------------------------------------------------------------------
1911  367.0  28  13 .683   3  2.57  133  2.13  161   35  .630   8.0   4.7

IP	Innings Pitched

W	Wins

L	Losses

PCT	Winning Percentage
	W / (W + L)

SV	Saves

ERA	Earned Run Average
	(ER / IP) * 9

ERA+	Adjusted Earned Run Average
	(League ERA * Park Factor) / Pitcher ERA

ERC	Component Earned Run Average
	An estimate of what a pitcher's ERA should have been based on his
	pitching performance.

ERC+	Adjusted Component Earned Run Average
	(League ERA * Park Factor) / Pitcher ERA

PR+	Adjusted Pitching Runs
	Total Baseball's estimate of the number of runs a pitcher saved
	beyond what a league-average pitcher might have saved.

PWP	Pythagorean Winning Percentage
	An estimate of what a pitcher's winning percentage would have been
	had he been provided with league-average run support.

WAR	Wins Above Replacement

WAA	Wins Above Average