MLB Relative Power Index (RPI) - 2010

Season:
MLB RPI Rankings
RK TEAM RPI W L PCT SOS PWR RS RA EXPW-L EXPWP
1 Pittsburgh Pirates .460 57 105 .352 .495 30 587 866 51-111 .315
2 Seattle Mariners .472 61 101 .377 .504 29 513 698 57-105 .351
3 Arizona Diamondbacks .480 65 97 .401 .506 28 713 836 68-94 .421
4 Kansas City Royals .480 67 95 .414 .503 27 676 845 63-99 .390
5 Baltimore Orioles .486 66 96 .407 .513 26 613 785 61-101 .379
6 Washington Nationals .482 69 93 .426 .501 25 655 742 71-91 .438
7 Cleveland Indians .485 69 93 .426 .505 24 646 752 69-93 .425
8 Houston Astros .489 76 86 .469 .496 23 611 729 67-95 .413
9 Chicago Cubs .484 75 87 .463 .491 22 685 767 72-90 .444
10 Milwaukee Brewers .487 77 85 .475 .491 21 750 804 75-87 .465
11 Los Angeles Dodgers .501 80 82 .494 .504 20 667 692 78-84 .482
12 New York Mets .498 79 83 .488 .501 19 656 652 81-81 .503
13 Los Angeles Angels .499 80 82 .494 .501 18 681 702 79-83 .485
14 Florida Marlins .502 80 82 .494 .505 17 719 717 81-81 .501
15 Oakland Athletics .500 81 81 .500 .500 16 663 626 86-76 .529
16 Detroit Tigers .497 81 81 .500 .496 15 751 743 82-80 .505
17 Toronto Blue Jays .518 85 77 .525 .515 14 755 728 84-78 .518
18 Colorado Rockies .503 83 79 .512 .500 13 770 717 87-75 .536
19 St. Louis Cardinals .500 86 76 .531 .489 12 736 641 92-70 .569
20 Chicago White Sox .505 88 74 .543 .492 11 752 704 86-76 .533
21 Boston Red Sox .520 89 73 .549 .510 10 818 744 89-73 .547
22 San Diego Padres .510 90 72 .556 .495 9 665 581 92-70 .567
23 Cincinnati Reds .505 91 71 .562 .486 8 790 685 92-70 .571
24 Atlanta Braves .515 91 71 .562 .499 7 738 629 94-68 .579
25 Texas Rangers .509 90 72 .556 .493 6 787 687 92-70 .568
26 San Francisco Giants .515 92 70 .568 .497 5 697 583 95-67 .588
27 Minnesota Twins .520 94 68 .580 .499 4 781 671 93-69 .575
28 New York Yankees .525 95 67 .586 .505 3 859 693 98-64 .606
29 Tampa Bay Rays .528 96 66 .593 .507 2 802 649 98-64 .604
30 Philadelphia Phillies .527 97 65 .599 .503 1 772 640 96-66 .593
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.