MLB Relative Power Index (RPI) - 2012

Season:
MLB RPI Rankings
RK TEAM RPI W L PCT SOS PWR RS RA EXPW-L EXPWP
1 Baltimore Orioles .550 27 15 .643 .519 3 193 179 23-19 .538
2 Tampa Bay Rays .537 25 17 .595 .517 7 182 168 23-19 .540
3 Texas Rangers .535 26 16 .619 .507 1 235 151 30-12 .708
4 Atlanta Braves .530 26 16 .619 .501 4 216 176 25-17 .601
5 Los Angeles Dodgers .529 28 13 .683 .477 2 183 138 26-15 .637
6 Washington Nationals .525 24 17 .585 .505 6 155 137 23-18 .561
7 New York Mets .521 22 19 .537 .516 10 172 203 17-24 .418
8 Toronto Blue Jays .520 23 19 .548 .510 9 200 165 25-17 .595
9 New York Yankees .518 21 20 .512 .520 8 189 182 21-20 .519
10 Boston Red Sox .509 20 21 .488 .516 23 221 204 22-19 .540
11 Cleveland Indians .507 23 18 .561 .489 11 179 183 20-21 .489
12 Cincinnati Reds .506 21 19 .525 .500 14 155 155 20-20 .500
13 Miami Marlins .506 22 19 .537 .496 12 152 151 21-20 .503
14 Chicago White Sox .505 21 21 .500 .507 16 174 165 22-20 .527
15 Pittsburgh Pirates .502 19 22 .463 .514 24 118 150 16-25 .382
16 Oakland Athletics .499 21 21 .500 .498 15 150 164 19-23 .456
17 St. Louis Cardinals .497 22 19 .537 .484 5 217 160 27-14 .648
18 Houston Astros .496 18 23 .439 .515 20 167 164 21-20 .509
19 San Francisco Giants .492 21 20 .512 .485 17 155 159 20-21 .487
20 Seattle Mariners .491 19 24 .442 .508 25 164 176 20-23 .465
21 Detroit Tigers .491 20 21 .488 .492 13 180 185 20-21 .486
22 Arizona Diamondbacks .487 19 23 .452 .499 18 169 184 19-23 .458
23 Philadelphia Phillies .486 21 21 .500 .481 19 171 167 21-21 .512
24 Kansas City Royals .473 16 24 .400 .498 28 160 182 17-23 .436
25 Los Angeles Angels .471 18 24 .429 .485 21 153 164 20-22 .465
26 San Diego Padres .468 16 26 .381 .497 29 133 168 16-26 .385
27 Chicago Cubs .467 15 26 .366 .501 27 149 186 16-25 .391
28 Colorado Rockies .462 15 25 .375 .491 26 191 218 17-23 .434
29 Milwaukee Brewers .459 17 24 .415 .474 22 176 205 17-24 .424
30 Minnesota Twins .451 14 27 .341 .487 30 155 225 13-28 .322
Glossary
  • W: Wins
  • L: Losses
  • PCT: Winning percentage
  • RPI: Relative Power Index+
  • SOS: Strength of schedule
  • PWR: ESPN Power Ranking
  • RS: Runs scored
  • RA: Runs allowed
  • EXW-L: Expected W-L*
  • EXWP: Expected winning percentage*
+The basic formula is 25% team winning percentage, 50% opponents' average winning percentage, and 25% opponents' opponents' average winning percentage.
*ExW-L and ExWP are derived from Bill James' Pythagorean theorem of baseball: Runs scored [squared] / (Runs scored [squared] + runs allowed [squared]). This formula was designed to relate a team's runs scored and runs allowed to its won-lost record.