Wednesday, March 25, 2015

NBA 2014-15 18-week Power Ratings

Ratings reflect play through Wednesday March 4. (The Criteria is explained below.)


No. 1 Golden State Warriors (5)
[18-week ESPN rating: 1
15-week Abacus rating: 1
12-week Abacus rating: 1
9-week Abacus rating: 1
6-week Abacus rating: 1
3-week Abacus rating: 5]

47-12, .797; 1st in Pacific Division / 1st seed / 2nd overall
KK:  +20; (22 Road Wins – 2 Home Losses) / No. 1 overall
CQ:  +38; (.510 [4th] - .472 [2nd]) / No. 1 overall
SPOR-t:  +46; (572 [9th] – 526 [5th]) / No. 1 overall

No. 2 Memphis Grizzlies (12)
[18-week ESPN rating: 3
15-week Abacus rating: 2
12-week Abacus rating: 2
9-week Abacus rating: 3
6-week Abacus rating: 2
3-week Abacus rating: 1]

43-17, .717; 1st in Southwest Division / 2nd seed / 3rd overall
KK:  +13; (20 Road Wins – 7 Home Loss) / No. 3 overall
CQ:  +32; (.509 [6th] - .477 [5th]) / No. 2 overall
SPOR-t:  +36; (571 [10th] – 535 [8th]) / No. 4 overall

No. 3 Los Angeles Clippers (23)
[18-week ESPN rating: 6
15-week Abacus rating: 5
12-week Abacus rating: 8
9-week Abacus rating: 9
6-week Abacus rating: 8
3-week Abacus rating: 19]

40-22, .645; 2nd in Pacific Division / 5th seed / 6th overall (tied)
KK:  +8; (17 Road Wins – 9 Home Losses) / No. 8 overall
CQ:  +26; (.523 [1st] - .497 [18th]) / No. 3 overall (tied)
SPOR-t:  +35; (574 [8th] – 539 [10th]) / No.  5 overall

No. 4 Atlanta Hawks (25.5)
[18-week ESPN rating: 2
15-week Abacus rating: 4
12-week Abacus rating: 5
9-week Abacus rating: 8
6-week Abacus rating: 13
3-week Abacus rating: 15]

48-12, .800; 1st in Southeast Division / 1st seed / 1st overall
KK:  +16; (20 Road Wins – 4 Home Losses) / No. 2 overall
CQ:  +26; (.496 [13th] - .470 [1st]) / No. 3 overall (tied)
SPOR-t:  -5; (530 [26th] – 535 [8th]) / No. 19 overall

No. 5 Dallas Mavericks (27)
[18-week ESPN rating: 9
15-week Abacus rating: 3
12-week Abacus rating: 2
9-week Abacus rating: 4
6-week Abacus rating: 3
3-week Abacus rating: 2]

40-22, .645; 3rd in Southwest Division / 5th seed / 6th overall (tied)
KK:  +9; (19 Road Wins – 10 Home Losses) / No. 4 overall (tied)**
CQ:  +23; (.510 [3rd] - .487 [12th]) / No. 5 overall
SPOR-t:  +15; (576 [4th] – 561 [19th]) / No. 10 overall

No. 6 San Antonio Spurs (32.5)
[18-week ESPN rating: 8
15-week Abacus rating: 7
12-week Abacus rating: 7
9-week Abacus rating: 11
6-week Abacus rating: 4
3-week Abacus rating: 10]

37-23, .617; 4th in Southwest Division / 7th seed / 11th overall
KK:  +9; (16 Road Wins – 7 Home Losses) / No. 4 overall (tied)**
CQ:  +10; (.491 [18th] - .481 [6th]) / No. 10 overall
SPOR-t:  +21; (542 [21st] – 521 [3rd]) / No. 6 overall

No. 7 Oklahoma City Thunder (33.5)
[18-week ESPN rating: 11
15-week Abacus rating: 10
12-week Abacus rating: 11
9-week Abacus rating: 14
6-week Abacus rating: 22
3-week Abacus rating: 28]

34-27, .557; 2nd in Northwest Division / 8th seed / 12th overall (tied)
KK:  +6; (14 Road Wins – 8 Home Losses) / No. 10 overall (tied)*
CQ:  +15; (.495 [14th] - .484 [8th]) / No. 7 overall
SPOR-t:  +41; (575 [6th] – 534 [7th]) / No. 3 overall

No. 8 Washington Wizards (34.5)
[18-week ESPN rating: 19
15-week Abacus rating: 6
12-week Abacus rating: 4
9-week Abacus rating: 4
6-week Abacus rating: 5
3-week Abacus rating: 4]

34-27, .557; 2nd in Southeast Division / 5th seed / 12th overall (tied)
KK:  +3; (13 Road Wins – 10 Home Losses) / No. 14 overall
CQ:  +17; (.500 [10th] - .483 [9th]) / No. 6 overall
SPOR-t:  +44; (562 [12th] – 518 [2nd]) / No. 2 overall

No. 9 Cleveland Cavaliers (39)
[18-week ESPN rating: 5
15-week Abacus rating: 13
12-week Abacus rating: 17
9-week Abacus rating: 12
6-week Abacus rating: 10
3-week Abacus rating: 12]

39-24, .619; 2nd in Central Division / 4th seed / 10th overall
KK:  +7; (16 Road Wins – 9 Home Losses) / No. 9 overall
CQ:  +13; (.509 [7th] - .500 [17th]) / No. 8 overall (tied)
SPOR-t:  +12; (583 [2nd] – 571 [23rd]) / No. 11 overall (tied)

No. 10 Houston Rockets (40.5)
[18-week ESPN rating: 4
15-week Abacus rating: 9
12-week Abacus rating: 8
9-week Abacus rating: 10
6-week Abacus rating: 9
3-week Abacus rating: 3]

41-20, .672; 2nd in Southwest Division / 4th seed / 5th overall
KK:  +9; (18 Road Wins – 9 Home Losses) / No. 4 overall (tied)**
CQ:  +1; (.483 [23rd] - .482 [8th]) / No. 15 overall
SPOR-t:  +4; (546 [19th] – 542 [11th]) / No. 15 overall

No. 11 Portland Trail Blazers (43.5)
[18-week ESPN rating: 7
15-week Abacus rating: 12
12-week Abacus rating: 10
9-week Abacus rating: 6
6-week Abacus rating: 5
3-week Abacus rating: 9]

40-19, .678; 1st in Northwest Division / 3rd seed / 4th overall
KK:  +9; (15 Road Wins – 6 Home Losses) / No. 4 overall (tied)**
CQ:  0; (.484 [22nd] - .484 [10th]) / No. 16 overall
SPOR-t:  -1; (546 [19th] – 547 [12th]) / No. 18 overall

No. 12 Toronto Raptors (44)
[18-week ESPN rating: 10
15-week Abacus rating: 8
12-week Abacus rating: 6
9-week Abacus rating: 2
6-week Abacus rating: 7
3-week Abacus rating: 7]

38-23, .623; 1st in Atlantic Division / 2nd seed / 8th overall (tied)
KK:  +6; (17 Road Wins – 11 Home Losses) / No. 10 overall (tied)*
CQ:  +7; (.511 [2nd] - .504 [24th]) / No. 11 overall (tied)
SPOR-t:  +9; (580 [3rd] – 571 [23rd]) / No. 13 overall

No. 13 Chicago Bulls (47.5)
[18-week ESPN rating: 14
15-week Abacus rating: 11
12-week Abacus rating: 12
9-week Abacus rating: 7
6-week Abacus rating: 11
3-week Abacus rating: 8]

38-23, .623; 1st in Central Division / 2nd seed / 8th overall (tied)
KK:  +6; (19 Road Wins – 13 Home Losses) / No. 10 overall (tied)*
CQ:  +7; (.502 [8th] - .495 [16th]) / No. 11 overall (tied)
SPOR-t:  +1; (575 [6th] – 574 [26th]) / No. 16 overall (tied)

No. 14 New Orleans Pelicans (50.5)
[18-week ESPN rating: 12
15-week Abacus rating: 14
12-week Abacus rating: 13
9-week Abacus rating: 13
6-week Abacus rating: 14
3-week Abacus rating: 11]

33-28, .541; 5th in Southwest Division / 9th seed / 14th overall
KK:  +2; (12 Road Wins – 10 Home Losses) / No. 15 overall (tied)
CQ:  +2; (.509 [5th] - .507 [26th]) / No. 14 overall
SPOR-t:  +18; (596 [1st] – 578 [28th]) / No. 7 overall

No. 15 Charlotte Hornets (55)
[18-week ESPN rating: 21
15-week Abacus rating: 16
12-week Abacus rating: 16
9-week Abacus rating: 24
6-week Abacus rating: 24
3-week Abacus rating: 21]

26-33, .441; 4th in Southeast Division / 8th seed / 18th overall
KK:  -4; (12 Road Wins – 16 Home Losses) / No. 20 overall
CQ:  +13; (.481 [26th] - .476 [5th]) / No. 8 overall (tied)
SPOR-t:  +16; (527 [28th] – 511 [1st]) / No. 8 overall (tied)

No. 16 Milwaukee Bucks (57.5)
[18-week ESPN rating: 15
15-week Abacus rating: 14
12-week Abacus rating: 15
9-week Abacus rating: 16
6-week Abacus rating: 16
3-week Abacus rating: 13]

32-29, .525; 3rd in Central Division / 6th seed / 15th overall
KK:  +4; (15 Road Wins – 11 Home Losses) / No. 13 overall
CQ:  +6; (.482 [25th] - .476 [3rd]) / No. 13 overall
SPOR-t:  +1; (533 [23rd] – 532 [6th]) / No. 16 overall (tied)

No. 17 Utah Jazz (68.5)
[18-week ESPN rating: 17
15-week Abacus rating: 20
12-week Abacus rating: 23
9-week Abacus rating: 22
6-week Abacus rating: 25
3-week Abacus rating: 22]

24-36, .400; 3rd in Northwest Division / 11th seed / 22nd overall
KK:  -5; (11 Road Wins – 16 Home Losses) / No. 21 overall
CQ:  -1; (.497 [12th] - .498 [20th]) / No. 17 overall
SPOR-t:  +16; (576 [4th] – 560 [18th]) / No. 8 overall (tied)

No. 18 Indiana Pacers (70.5)
[18-week ESPN rating: 13
15-week Abacus rating: 19
12-week Abacus rating: 22
9-week Abacus rating: 21
6-week Abacus rating: 23
3-week Abacus rating: 23]

26-34, .433; 4th in Central Division / 9th seed / 19th overall
KK:  -3 (11 Road Wins – 14 Home Loss) / No. 19 overall
CQ:  -6; (.479 [28th] - .485 [11th]) / No. 21 overall
SPOR-t:  +12; (533 [24th] – 524 [3rd]) / No. 11 overall (tied)

No. 19 Phoenix Suns (74.5)
[18-week ESPN rating: 16
15-week Abacus rating: 17
12-week Abacus rating: 14
9-week Abacus rating: 15
6-week Abacus rating: 15
3-week Abacus rating: 18]

32-30, .516; 3rd in Pacific Division / 10th seed / 16th overall
KK:  +2; (15 Road Wins – 13 Home Losses) / No. 15 overall (tied)
CQ:  -7; (.495 [14th] - .502 [22nd]) / No. 22 overall
SPOR-t:  -11; (556 [14th] – 567 [21st]) / No. 21 overall

No. 20 Miami Heat (78)
[18-week ESPN rating: 23
15-week Abacus rating: 21
12-week Abacus rating: 21
9-week Abacus rating: 23
6-week Abacus rating: 21
3-week Abacus rating: 14]

27-33, .450; 3rd in Southeast Division / 7th seed / 17th overall
KK:  -2; (15 Road Wins – 17 Home Losses) / No. 17 overall (tied)
CQ:  -4; (.493 [16th] - .497 [19th]) / No. 18 overall (tied)
SPOR-t:  -29; (528 [27th] – 557 [17th]) / No. 25 overall

No. 21 Detroit Pistons (80.5)
[18-week ESPN rating: 22
15-week Abacus rating: 18
12-week Abacus rating: 20
9-week Abacus rating: 26
6-week Abacus rating: 29
3-week Abacus rating: 27]

23-37, .383; 5th in Central Division / 12th seed / 23rd overall
KK:  -9; (11 Road Wins – 20 Home Losses) / No. 23 overall (tied)
CQ:  -5; (.489 [19th] - .494 [14th]) / No. 20 overall
SPOR-t:  +7; (563 [11th] – 556 [15th]) / No. 14 overall

No. 22 Brooklyn Nets (86.5)
[18-week ESPN rating: 20
15-week Abacus rating: 23
12-week Abacus rating: 24
9-week Abacus rating: 18
6-week Abacus rating: 19
3-week Abacus rating: 15]

25-34, .424; 2nd in Atlantic Division / 10th seed / 20th overall
KK:  -2; (14 Road Wins – 16 Home Losses) / No. 17 overall (tied)
CQ:  -12; (.488 [20th] - .500 [21st]) / No. 23 overall
SPOR-t:  -34; (537 [22nd] – 571 [23rd]) / No. 26 overall

No. 23 Boston Celtics (87)
[18-week ESPN rating: 18
15-week Abacus rating: 22
12-week Abacus rating: 25
9-week Abacus rating: 19
6-week Abacus rating: 18
3-week Abacus rating: 17]

24-35, .407; 3rd in Atlantic Division / 11th seed / 21st overall
KK:  -7; (9 Road Wins – 16 Home Losses) / No. 22 overall
CQ:  -14; (.481 [26th] - .495 [15th]) / No. 24 overall
SPOR-t:  -6; (550 [17th] – 556 [15th]) / No. 20 overall

No.24 Sacramento Kings (91)
[18-week ESPN rating: 25
15-week Abacus rating: 25
12-week Abacus rating: 19
9-week Abacus rating: 17
6-week Abacus rating: 12
3-week Abacus rating: 6]

21-38, .356; 4th in Pacific Division / 13th seed / 25th overall
KK:  -11; (8 Road Wins – 19 Home Losses) / No. 25 overall (tied)
CQ:  -4; (.502 [9th] - .506 [25th]) / No. 18 overall (tied)
SPOR-t:  -14; (551 [16th] – 565 [20th]) / No. 22 overall

No. 25 Denver Nuggets (96)
[18-week ESPN rating: 29
15-week Abacus rating: 24
12-week Abacus rating: 18
9-week Abacus rating: 19
6-week Abacus rating: 17
3-week Abacus rating: 24]

22-39, .361; 4th in Northwest Division / 12th seed / 24th overall
KK:  -9; (9 Road Wins – 18 Home Losses) / No. 23 overall (tied)
CQ:  -23; (.486 [21st] - .509 [27th]) / No. 25 overall (tied)
SPOR-t:  -18; (549 [18th] – 567 [21th]) / No. 23 overall

No. 26 Los Angeles Lakers (103.5)
[18-week ESPN rating: 27
15-week Abacus rating: 26
12-week Abacus rating: 27
9-week Abacus rating: 27
6-week Abacus rating: 26
3-week Abacus rating: 29]

16-44, .267; 5th in Pacific Division / 14th seed / 27th overall
KK:  -13; (7 Road Wins – 20 Home Losses) / No. 27 overall
CQ:  -23; (.494 [15th] - .517 [30th]) / No. 25 overall (tied)
SPOR-t:  -22; (555 [15th] – 577 [27th]) / No. 24 overall

No. 27 Orlando Magic (105.5)
[18-week ESPN rating: 26
15-week Abacus rating: 27
12-week Abacus rating: 26
9-week Abacus rating: 24
6-week Abacus rating: 20
3-week Abacus rating: 20]

19-43, .306; 5th in Southeast Division / 13th seed / 26th overall
KK:  -11; (10 Road Wins – 21 Home Losses) / No. 25 overall (tied)
CQ:  -24; (.479 [27th] - .503 [23rd]) / No. 27 overall
SPOR-t:  -36; (514 [29th] – 550 [14th]) / No. 27

No. 28 Minnesota Timberwolves (114)
[18-week ESPN rating: 24
15-week Abacus rating: 28
12-week Abacus rating: 28
9-week Abacus rating: 28
6-week Abacus rating: 27
3-week Abacus rating: 26]

13-47, .217; 5th in Northwest Division / 15th seed / 28th overall
KK:  -19; (5 Road Wins – 24 Home Losses) / No. 30 overall
CQ:  -26; (.491 [17th] - .517 [29th]) / No. 28 overall
SPOR-t:  -45; (557 [13th] – 602 [30th]) / No. 28 overall

No. 29 Philadelphia 76ers (116)
[18-week ESPN rating: 30
15-week Abacus rating: 29
12-week Abacus rating: 29
9-week Abacus rating: 20
6-week Abacus rating: 30
3-week Abacus rating: 30]

13-48, .213; 4th in Atlantic Division / 14th seed / 29th overall
KK:  -16; (5 Road Wins – 21 Home Losses) / No. 28 overall
CQ:  -38; (.450 [30th] - .488 [13th]) / No. 29 overall
SPOR-t:  -76; (473 [30th] – 549 [13th]) / No. 30 overall

No. 30 New York Knicks (118)
[18-week ESPN rating: 27
15-week Abacus rating: 30
12-week Abacus rating: 30
9-week Abacus rating: 29
6-week Abacus rating: 28
3-week Abacus rating: 25]

12-48, .200; 5th in Atlantic Division / 15th seed / 30th overall
KK:  -18; (4 Road Wins – 22 Home Losses) / No. 29 overall
CQ:  -45; (.468 [29th] - .513 [28th]) / No. 30 overall
SPOR-t:  -51; (531 [25th] – 582 [29th]) / No. 29 overall

Power Ratings --The Measurement Instrument

Our team-ranking tool utilizes four elements. Two scales are based solely on team wins and losses; the others are measures of the efficiency of team performance in comparison with the competition. First, we’ll simply use win-loss record irrespective of conference.

The second criterion will be the difference between a team’s road wins and its home losses. Since this cute little metric is said to be a personal favorite of veteran NBA coach George Karl, let’s call this the Karl Kount (KK).

Criterion No. 3, Conversion Quotient (CQ), involves the rate at which a team converts its possessions into a successful field goals or free throw attempts. Like the KK, the computation is simple subtraction—a team’s rate of offensive efficiency minus that of the opponent.

Lastly, please allow Abacus to introduce the “SPOR-t” score. SPOR-t stands for “Shooting Plus Offensive Rebounds minus turnovers.” Add a team’s FG percentage and its offensive rebounding percentage (o. boards divided by the sum of those o. boards and the opposition's d. boards). Then subtract the percentage of a team’s possessions lost to turnovers. For example, a team shoots field goals at a .488 clip, offensive rebounds at a rate of .199, and commits a turnover on .143 of its possessions. So its SPOR-t is (488+199-143) or 544. Once again, our measurement will be the difference between the SPOR-t scores of a team and its opposition.


We’ll rank the teams from 1 to 30 in all criteria and simply add up the rankings. Low score wins, naturally.