Thursday, November 20, 2014

NBA 2014-2015: Performance Ratings & Power Ratings thru Wednesday 11/19/14



Now that we are at least 10 games into the season for each team let’s take a first glance at the NBA SBPI [SportsBoss Power Index].  As a reminder this model uses the Four Factors analysis as a basis to measure team effectiveness & efficiency in key statistical areas.  New this season I have added in a solid metric for SOS, along with adjusting the ratings to better tie into my indices in other sports where higher marks are better scores (if you look back at last season I used the reverse for the NBA where lower grades were better).  Here is where each team stands through last night’s action:

OFFENSE

DEFENSE

TOTAL

SOS ADJ

SU
Team
RANK

RANK

RANK

RATING
RANK

RECORD
Memphis
3

2

1

170.7
1

10-2
Dallas
2

21

4

144.7
2

9-3
Toronto
3

16

3

143.9
3

9-2
L.A. Clippers
7

12

8

143.1
4

6-4
Houston
11

3

2

142.2
5

9-3
Portland
5

19

5

141.5
6

8-3
San Antonio
26

1

10

139.8
7

7-4
Sacramento
14

14

13

139.8
8

6-5
Cleveland
6

14

5

137.3
9

5-5
Golden State
19

8

12

136.1
10

8-2
Minnesota
11

10

9

136.1
11

3-7
Washington
16

7

10

133.7
12

7-3
Chicago
7

11

5

131.2
13

8-3
Utah
7

25

14

129.9
14

5-7
L.A. Lakers
1

30

19

128.0
15

3-9
Boston
15

17

15

126.8
16

4-6
Indiana
24

4

15

125.9
17

5-7
New Orleans
10

27

18

124.6
18

6-4
Charlotte
27

6

19

122.6
19

4-8
Milwaukee
25

4

17

117.8
20

7-5
Miami
16

21

21

117.1
21

6-5
Detroit
22

9

22

110.0
22

3-9
Phoenix
22

19

26

108.3
23

7-5
Atlanta
20

23

24

107.5
24

5-5
Denver
13

28

23

107.5
25

4-7
Brooklyn
16

26

25

105.1
26

4-7
Orlando
28

12

27

98.1
27

5-8
Oklahoma City
29

17

28

93.3
28

3-10
Philadelphia
30

23

30

80.0
29

0-11
New York
21

29

29

79.3
30

3-10

Let’s take a closer look at the above ratings, and provide some color behind a few teams that “stand out” for seemingly rating higher or lower than expected:

Memphis: the Grizzlies have the best record in the NBA & also lead the SBPI by a decent margin.  Right now I would have them as approximately 4pt favorites over the Rockets on a neutral floor – these teams met in Memphis recently with game going off as Memphis -4.5; my model would have set that # closer to -8.5 & the Grizzlies went on to paste the Rockets by 20+.  Their biggest weakness at this point is EFG%, an area they figure to struggle in more times than not because of the makeup of their roster.  That is the precise reason the Grizzlies are an annual tough out in the playoffs but at the end of the day they fail to score enough to truly challenge the elite in the Western Conference.

Toronto: the Raptors are the only Eastern Conference team with 2 losses or fewer, and they narrowly handled a depleted Grizzlies roster last night at home.  With the injury losses Indiana has suffered, the slow growth the Cavaliers figure to endure & the uncertain status of Bulls PG Derrick Rose this season the Raptors may be very well positioned come May to make a run at their first NBA Finals berth.

Western Conference: of the top 15 teams in the above ratings 11 are from the West, and that does not include Phoenix or Oklahoma City, a pair of teams that clearly have designs on making a playoff run this season.

Minnesota: the only sub .500 team in the Top 13 are the Wolves & they have been steadily dropping in the ratings since PG Ricky Rubio went down early this season.  They must ratchet up their defense a FEW levels to continue competing in the rugged Western Conference.

Oklahoma City, Philadelphia, New York: the three teams with the worst record in the NBA check in as the three worst in the SBPI as well.  Now we know OKC will be a threat very shortly once PG Russell Westbrook & F Kevin Durant return from injury – but the other two figure to be among the worst handful of teams all season long, with the Sixers in prime position to secure the top pick in the 2015 NBA Draft.

Next let’s dive into the Power Ratings which use the Performance Rankings as a base:

Team
Home PR
Away PR
Memphis
117.5
113.0
Toronto
113.2
109.2
Portland
112.9
108.9
Dallas
113.3
109.3
Golden State
112.1
108.1
Atlanta
108.1
104.1
Washington
111.8
107.8
New Orleans
110.5
106.5
Milwaukee
109.5
105.5
San Antonio
112.1
108.6
Charlotte
109.2
106.2
Houston
112.0
109.0
Sacramento
111.6
108.6
Utah
110.2
107.2
L.A. Clippers
111.6
109.1
Phoenix
106.7
104.2
Miami
107.9
105.4
Brooklyn
106.2
103.7
Minnesota
110.6
108.1
Indiana
108.7
106.7
Oklahoma City
104.1
102.1
Chicago
109.4
107.4
Cleveland
110.3
108.3
Denver
106.1
104.1
Orlando
104.8
102.8
Boston
108.8
106.8
Detroit
106.4
104.4
New York
102.1
100.1
L.A. Lakers
109.0
107.0
Philadelphia
102.2
100.2

These are actual Power Ratings that can be used when handicapping nightly matchups.  Using those ratings as a base let’s look closer at Thursday night’s slate:

LA Clippers -3.5 at Miami: my numbers above set this line at LAC -1 so there is a bit of value on the #.  It may be a tough spot for the Clippers coming across the country last night to face Orlando, and coming back the next night to face the Heat.  

Chicago at Sacramento -1.5: my numbers above set this line at SAC -4 so there is again a bit of value on the #.  I typically target more than 1 possession of variance to feel very solid about getting “value” on a number.  But this is also a similar spot to above where my numbers favor the home team some, and their opponent is in the midst of an opposite coast trip.

Since it’s far too early in the season to use performance and its impact on Pythagorean record we will skip that portion until the numbers settle in some & they can be used to better forecast.  Instead let’s take a look at where each team stands ATS wise thus far:


ATS RECORD
Team
WIN
LOSS
%
Dallas
9
3
75.0%
Milwaukee
9
3
75.0%
Portland
8
3
72.7%
Golden State
7
3
70.0%
Indiana
7
4
63.6%
Toronto
7
4
63.6%
Sacramento
7
4
63.6%
Orlando
8
5
61.5%
Utah
7
5
58.3%
Miami
6
5
54.5%
L.A. Lakers
6
5
54.5%
Oklahoma City
6
6
50.0%
Houston
6
6
50.0%
Memphis
6
6
50.0%
Minnesota
5
5
50.0%
New Orleans
5
5
50.0%
Boston
5
5
50.0%
San Antonio
5
6
45.5%
Chicago
5
6
45.5%
Phoenix
5
6
45.5%
Charlotte
5
6
45.5%
Atlanta
4
6
40.0%
Washington
4
6
40.0%
Cleveland
4
6
40.0%
Brooklyn
4
7
36.4%
Philadelphia
4
7
36.4%
Detroit
4
8
33.3%
Denver
3
7
30.0%
New York
3
10
23.1%
L.A. Clippers
2
8
20.0%

How good are bookmakers at setting odds?  Twelve of the thirty teams in the NBA are currently playing to within one game of .500 in their ATS record.  There are three ways I find this information useful:

  • Finding teams that are skewed drastically in one direction & play for them to come back towards .500.  Of course you need to find great “spots” to execute that strategy, however, I do feel passing on say a team facing the Knicks is smarter than playing against the Knicks at this point.  Many will disagree with that strategy but remember, its ALWAYS OK to pass on a game.
  • Finding teams whose ATS record does not match up with the SBPI ratings above.  A good example of this would be Milwaukee, who is playing as the 20th best team according to my ratings yet sits at 9-3 ATS.  Their lines may become inflated by the slightest of margins so their ATS record comes back towards the median, however, there are truly not playing as well as the public most likely perceives because of that ATS record.
  • Locating teams whose home/road game skews are big at this early point in the season.  As we get deeper into a season we get a better feel for every team because they will have significant sample sizes in both home & road games; right now however teams like Toronto & Portland have played 8 home games while San Antonio has played just 4.
Thanks for reading.  In the early part of the season I will only be publishing this article approximately every 10-14 days; as the calendar turns to 2015 and football winds down we will post this article more frequently.

Email me directly: boss@thesportsboss.com
Visit my website: www.thesportsboss.com
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COPYRIGHT: THE SPORTSBOSS, 2014

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