MLB Relative Power Index (RPI) - 2012

Season:
MLB RPI Rankings
RK TEAM RPI W L PCT SOS PWR RS RA EXPW-L EXPWP
1 Minnesota Twins .453 15 31 .326 .495 29 181 260 15-31 .326
2 Colorado Rockies .463 17 28 .378 .491 27 218 249 20-25 .434
3 Milwaukee Brewers .455 19 27 .413 .469 26 203 229 20-26 .440
4 Boston Red Sox .518 23 23 .500 .524 16 243 228 24-22 .532
5 New York Mets .518 26 21 .553 .507 15 202 223 21-26 .451
6 Arizona Diamondbacks .487 21 26 .447 .501 22 197 214 22-25 .459
7 Cleveland Indians .510 26 20 .565 .491 9 200 212 22-24 .471
8 Atlanta Braves .515 26 22 .542 .507 4 232 207 27-21 .557
9 Detroit Tigers .489 22 24 .478 .492 18 202 205 23-23 .493
10 Chicago Cubs .459 15 31 .326 .503 28 157 205 17-29 .370
11 Kansas City Royals .479 18 27 .400 .505 24 177 204 19-26 .429
12 Toronto Blue Jays .514 24 23 .511 .515 8 225 202 26-21 .554
13 San Diego Padres .468 17 31 .354 .505 30 151 202 17-31 .358
14 Baltimore Orioles .544 29 18 .617 .519 2 219 200 26-21 .545
15 New York Yankees .519 25 21 .543 .511 10 215 198 25-21 .541
16 Seattle Mariners .487 21 28 .429 .507 25 183 197 23-26 .463
17 San Francisco Giants .491 24 23 .511 .485 12 193 193 24-24 .500
18 Chicago White Sox .510 25 22 .532 .503 17 216 192 26-21 .559
19 Miami Marlins .512 26 21 .553 .498 11 189 192 23-24 .492
20 Tampa Bay Rays .534 28 19 .596 .514 5 206 190 25-22 .540
21 Oakland Athletics .492 22 25 .468 .500 19 158 188 19-28 .414
22 Philadelphia Phillies .495 25 23 .521 .487 14 197 187 25-23 .526
23 St. Louis Cardinals .491 25 22 .532 .478 6 243 185 30-17 .633
24 Houston Astros .505 22 24 .478 .514 23 188 177 24-22 .530
25 Los Angeles Angels .478 23 25 .479 .478 20 176 174 24-24 .506
26 Texas Rangers .533 29 18 .617 .505 3 264 173 33-14 .700
27 Cincinnati Reds .520 26 20 .565 .505 13 184 172 25-21 .534
28 Los Angeles Dodgers .522 31 15 .674 .471 1 208 163 28-18 .620
29 Pittsburgh Pirates .504 22 24 .478 .512 21 130 162 18-28 .392
30 Washington Nationals .537 28 18 .609 .513 7 178 152 27-19 .578
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.