Relative Percent Index - 2009-2010
| 2009-10 NBA RPI Rankings | ||||||||||||
| RNK | TEAM | RPI | W | L | PCT | SOS | PWR | PF | PA | Exp. W-L | Exp. WP | |
| 1 | Boston | .653 | 6 | 1 | .857 | .584 | 1 | 702 | 599 | 7-0 | .932 | |
| 2 | Miami | .649 | 5 | 1 | .833 | .588 | 11 | 591 | 544 | 5-1 | .797 | |
| 3 | Phoenix | .649 | 5 | 1 | .833 | .587 | 10 | 666 | 641 | 4-2 | .653 | |
| 4 | Chicago | .620 | 3 | 2 | .600 | .627 | 14 | 438 | 464 | 1-4 | .279 | |
| 5 | LA Lakers | .595 | 5 | 1 | .833 | .516 | 3 | 615 | 594 | 4-2 | .640 | |
| 6 | Orlando | .589 | 5 | 1 | .833 | .508 | 2 | 652 | 595 | 5-1 | .819 | |
| 7 | Portland | .568 | 3 | 3 | .500 | .591 | 9 | 567 | 550 | 4-2 | .623 | |
| 8 | Houston | .567 | 4 | 2 | .667 | .533 | 17 | 626 | 603 | 4-2 | .650 | |
| 9 | Denver | .561 | 5 | 1 | .833 | .471 | 4 | 665 | 605 | 5-1 | .826 | |
| 10 | Atlanta | .546 | 4 | 2 | .667 | .505 | 8 | 623 | 615 | 3-3 | .553 | |
| 11 | Philadelphia | .524 | 3 | 2 | .600 | .498 | 15 | 517 | 532 | 2-3 | .384 | |
| 12 | Cleveland | .515 | 4 | 3 | .571 | .496 | 7 | 661 | 629 | 5-2 | .694 | |
| 13 | Charlotte | .512 | 3 | 2 | .600 | .482 | 21 | 422 | 433 | 2-3 | .395 | |
| 14 | Indiana | .506 | 2 | 3 | .400 | .542 | 25 | 488 | 502 | 2-3 | .385 | |
| 15 | Dallas | .504 | 3 | 2 | .600 | .473 | 5 | 481 | 465 | 3-2 | .636 | |
| 16 | Toronto | .496 | 3 | 2 | .600 | .461 | 16 | 541 | 520 | 3-2 | .658 | |
| 17 | Utah | .493 | 2 | 3 | .400 | .524 | 13 | 510 | 520 | 2-3 | .421 | |
| 18 | Oklahoma City | .473 | 2 | 3 | .400 | .497 | 19 | 459 | 461 | 2-3 | .482 | |
| 19 | Detroit | .472 | 2 | 4 | .333 | .519 | 20 | 551 | 561 | 3-3 | .426 | |
| 20 | Milwaukee | .462 | 2 | 2 | .500 | .449 | 23 | 350 | 339 | 3-1 | .629 | |
| 21 | Washington | .454 | 2 | 4 | .333 | .494 | 12 | 579 | 592 | 2-4 | .409 | |
| 22 | LA Clippers | .452 | 2 | 4 | .333 | .491 | 22 | 592 | 592 | 3-3 | .500 | |
| 23 | Golden State | .416 | 1 | 3 | .250 | .471 | 27 | 411 | 454 | 1-3 | .162 | |
| 24 | New York | .415 | 1 | 5 | .167 | .497 | 28 | 617 | 670 | 1-5 | .204 | |
| 25 | San Antonio | .412 | 2 | 3 | .400 | .416 | 6 | 494 | 491 | 3-2 | .525 | |
| 26 | New Orleans | .410 | 2 | 4 | .333 | .436 | 18 | 595 | 633 | 2-4 | .265 | |
| 27 | Minnesota | .392 | 1 | 5 | .167 | .467 | 26 | 546 | 589 | 1-5 | .223 | |
| 28 | Memphis | .367 | 1 | 5 | .167 | .434 | 24 | 631 | 690 | 1-5 | .186 | |
| 29 | New Jersey | .351 | 0 | 6 | .000 | .468 | 29 | 538 | 611 | 1-5 | .109 | |
| 30 | Sacramento | .311 | 1 | 4 | .200 | .348 | 30 | 507 | 541 | 1-4 | .255 | |
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Glossary W: Wins, L: Losses, PCT: Winning percentage, RPI: Relative Power Index+, SOS: Strength of schedule , PWR: ESPN Power Ranking , PF: Points scored, PA: Points 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 the Pythagorean 16.5 Method, the basketball adaptation of Bill James' Pythagorean theorem of baseball: Runs scored ^16.5 / (Runs scored ^16.5 + runs allowed ^16.5). This formula was designed to relate a team's points scored and points allowed to its won-lost record. |





