MLB Relative Power Index (RPI) - 2011

Season:
MLB RPI Rankings
RK TEAM RPI W L PCT SOS PWR RS RA EXPW-L EXPWP
1 Boston Red Sox .518 90 72 .556 .505 8 875 737 95-67 .585
2 New York Yankees .528 97 65 .599 .504 2 867 657 103-59 .635
3 Texas Rangers .523 96 66 .593 .500 4 855 677 100-62 .615
4 Detroit Tigers .517 95 67 .586 .494 5 787 711 89-73 .551
5 St. Louis Cardinals .509 90 72 .556 .493 10 762 692 89-73 .548
6 Toronto Blue Jays .507 81 81 .500 .509 13 743 761 79-83 .488
7 Cincinnati Reds .493 79 83 .488 .495 17 735 720 83-79 .510
8 Colorado Rockies .488 73 89 .451 .500 23 735 774 77-85 .474
9 Arizona Diamondbacks .516 94 68 .580 .494 6 731 662 89-73 .549
10 Kansas City Royals .482 71 91 .438 .497 25 730 762 78-84 .479
11 Milwaukee Brewers .518 96 66 .593 .493 3 721 638 91-71 .561
12 New York Mets .500 77 85 .475 .509 19 718 742 78-84 .484
13 Philadelphia Phillies .533 102 60 .630 .501 1 713 529 104-58 .645
14 Baltimore Orioles .490 69 93 .426 .511 27 708 860 65-97 .404
15 Tampa Bay Rays .519 91 71 .562 .505 7 707 614 92-70 .570
16 Cleveland Indians .496 80 82 .494 .496 14 704 760 75-87 .462
17 Los Angeles Angels .506 86 76 .531 .498 11 667 633 85-77 .526
18 Chicago White Sox .492 79 83 .488 .493 18 654 706 75-87 .462
19 Chicago Cubs .481 71 91 .438 .496 24 654 756 69-93 .428
20 Oakland Athletics .493 74 88 .457 .505 20 645 679 77-85 .474
21 Los Angeles Dodgers .501 82 79 .509 .498 15 644 612 85-76 .525
22 Atlanta Braves .513 89 73 .549 .501 9 641 605 86-76 .529
23 Florida Marlins .492 72 90 .444 .508 21 625 702 72-90 .442
24 Washington Nationals .501 80 81 .497 .502 16 624 643 78-83 .485
25 Minnesota Twins .474 63 99 .389 .503 29 619 804 60-102 .372
26 Houston Astros .460 56 106 .346 .498 30 615 796 61-101 .374
27 Pittsburgh Pirates .481 72 90 .444 .493 22 610 712 69-93 .423
28 San Diego Padres .481 71 91 .438 .496 26 593 611 79-83 .485
29 San Francisco Giants .506 86 76 .531 .497 12 570 578 80-82 .493
30 Seattle Mariners .483 67 95 .414 .506 28 556 675 65-97 .404
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.