MLB Relative Power Index (RPI) - 2012

Season:
MLB RPI Rankings
RK TEAM RPI W L PCT SOS PWR RS RA EXPW-L EXPWP
1 Washington Nationals .525 98 64 .605 .498 1 731 594 98-64 .602
2 Tampa Bay Rays .523 90 72 .556 .512 9 697 577 96-66 .593
3 New York Yankees .531 95 67 .586 .513 6 804 668 96-66 .592
4 St. Louis Cardinals .501 88 74 .543 .486 11 765 648 94-68 .582
5 Atlanta Braves .521 94 68 .580 .501 4 700 600 93-69 .576
6 Oakland Athletics .529 94 68 .580 .512 8 713 614 93-69 .574
7 Texas Rangers .521 93 69 .574 .504 2 808 707 92-70 .566
8 Cincinnati Reds .514 97 65 .599 .486 3 669 588 91-71 .564
9 Chicago White Sox .499 85 77 .525 .490 13 748 676 89-73 .550
10 San Francisco Giants .516 94 68 .580 .495 5 718 649 89-73 .550
11 Los Angeles Angels .522 89 73 .549 .513 10 767 699 88-74 .546
12 Detroit Tigers .507 88 74 .543 .495 12 726 670 87-75 .540
13 Los Angeles Dodgers .504 86 76 .531 .496 14 637 597 86-76 .532
14 Arizona Diamondbacks .496 81 81 .500 .495 16 734 688 86-76 .532
15 Milwaukee Brewers .492 83 79 .512 .485 15 776 733 86-76 .528
16 Baltimore Orioles .527 93 69 .574 .512 7 712 705 82-80 .505
17 Philadelphia Phillies .499 81 81 .500 .498 17 684 680 81-81 .503
18 Pittsburgh Pirates .488 79 83 .488 .488 18 651 674 78-84 .483
19 Seattle Mariners .501 75 87 .463 .514 20 619 651 77-85 .475
20 San Diego Padres .490 76 86 .469 .497 19 651 710 74-88 .457
21 New York Mets .493 74 88 .457 .506 23 650 709 74-88 .457
22 Toronto Blue Jays .497 73 89 .451 .513 22 716 784 74-88 .455
23 Boston Red Sox .489 69 93 .426 .511 24 734 806 73-89 .453
24 Kansas City Royals .485 72 90 .444 .498 21 676 746 73-89 .451
25 Colorado Rockies .474 64 98 .395 .500 28 758 890 68-94 .420
26 Minnesota Twins .477 66 96 .407 .500 26 701 832 67-95 .415
27 Miami Marlins .481 69 93 .426 .500 25 609 724 67-95 .414
28 Chicago Cubs .463 61 101 .377 .492 29 613 759 64-98 .395
29 Cleveland Indians .480 68 94 .420 .500 27 667 845 62-100 .384
30 Houston Astros .455 55 107 .340 .494 30 583 794 57-105 .350
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.
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