H-HR
BIP%=
-------- Opponent's
batting average on Balls Put In Play
3*IP-SO-DP
BIP% vs Team
=
BIP%-Team
BIP% A
pitcher's ability to prevent hits on Balls Put In Play, independent of team
defense.
PA
ERA
ERA+=
---------
* 100
A player's ERA Park Adjusted and compared to the league average
Lg
ERA
FIP% - Fielding Independent Pitching - (HR*13+(BB-IBB+HB)*3-K*2)/IP + F
Where F is a league-dependent factor used to make the stat resemble ERA. The 2006 factors are 3.22-NL and 3.26-AL.
ERA+
Simpler
and more accurate than
PR
in accounting for a
pitcher's
IP*ERA+
=
IP *
( ------ - 1 ) longevity
and effectiveness. In
my Top 100 List,
I divide it by 3 to
100
make
it close to
DPOR,
allowing for good hitter/pitcher comparisons.
BB+SO+3*HR
P%=
---------
Rough
percentage of a team's defense made up by ONLY pitchers
BB+H+3*IP
Regular
Season ERA
PERA+ --------------------------
* 100
Measures how much a pitcher stepped up or
Postseason
ERA choked
during the playoffs.
PLWTS - .47*1B + .78*2B + 1.09*3B + 1.4*HR + .33*(BB+HB) - .26*(AB-H-GIDP)-.72*GIDP
In our Pitcher Stats section, we do not include stolen base data in our calculation. This is primarily because we do not have it handy, although it could be a blessing in disguise as many pitchers don't have a huge effect on basestealing effectiveness.
IP
PR
=
---
* (Lg ERA- ERA)
Pitching Runs- Runs saved
beyond what a league average pitcher
9
would save.
PR+
Adjusted Pitching Runs-
Pitching Runs adjusted for home ballpark effects
Park =
PR -
PR+
Quantifies the home ballpark effect for a pitcher's entire career:
Positive
= Pitcher's Parks, Negative = Hitter's Parks
R-ER
UER/IP=
-------
Unearned
runs allowed per inning pitched
IP
WAT Original
Formula:
WAT=
Decisions * (Pitcher W%-Team W%)
Wins Above Team
Total Baseball
jazzed it up for
reasons that I do not find clear:
WAT=
Decisions * (Pitcher
W%-Team W%)
-----------------
2 - 2 * Team W%
WAT/D=
Pitcher W% - Team W%
Allows for
career "ability to win" comparisons between players
with disparate career innings pitched.
