Table of Contents
Introduction: Stats What I'm Talking About-Why Baseball's "Nerdy" Numbers Are Worth Learning xi
Section 1 Behind in the Count-The Trouble With the Old Stats 1
Average? More like Below Average! 3
RBI: Really Bad Idea? 8
To Err Is Human 14
Winning Isn't Everything 21
Save Us from the Save 31
Section 2 Batter Up(date)-The Best Qffense Stats 41
OBP (On-Base Percentage) 43
SLG (Slugging Percentage) 50
OPS (On-Base Plus Slugging) 56
RC (Runs Created) 61
ISO (Isolated Power) 67
wOBA (Weighted On-Base Average) 71
wRC+ (Weighted Runs Created Plus) and OPS+ (On-Base Plus Slugging Plus) 76
BsR (Baserunning) 82
Section 3 Pitching in and Catching on-The Best Pitching and Defense Stats 89
ERA+ (Adjusted Earned Run Average) 91
WHIP (Walks plus Hits per Inning Pitched) 98
GSc (Game Score) 102
FIP (Fielding Independent Pitching) 109
Miscellaneous Pitching Stats 117
DRS (Defensive Runs Saved) and UZR (Ultimate Zone Rating) 122
Miscellaneous Defense Stats 128
Section 4 There Is an Eye on Team-The Best Ways to Evaluate a Ballclub 133
Diff (Run Differential) 135
SRS (Simple Rating System) 142
DER (Defensive Efficiency Rating) 147
WP (Win Probability) 151
MN (Magic Number) 156
Section 5 The Full Count-Context Stats that Add Clarity 161
BABIP (Batting Average on Balls In Play) 163
xBA, xSLG, and xwOBA (Expected Batting Average, Slugging Percentage, and Weighted On-Base Average) 170
Park Factors 177
WPA (Win Probability Added) 182
WAR (Wins Above Replacement) 189
Epilogue: Stats All, Folks? 201
Quiz: The Numbers Game 205
Acknowledgments 211
Appendix of Analytic Rating Tables 215