Parity in the WNBA Stats

Posted on Tuesday, August 4th, 2009 at 5:08 pm by Kevin Pelton

The numbers are a day late today, but they still go only through Sunday (and do not include this morning’s Silver Stars win in L.A.) I want to talk a little about the WNBA’s parity (and a few things that quantify it), but for now we start with the Offensive and Defensive Rating rankings.

OFFENSIVE/DEFENSIVE RATINGS

Team           ORtg     Team           DRtg
-------------------     -------------------
Phoenix       108.9     Indiana        92.8
Minnesota     103.4     Connecticut    96.2
Seattle       101.6     Los Angeles    96.7
Indiana       101.4     Atlanta        97.5
Chicago        99.8     Seattle        97.7
AVERAGE        99.8     New York       97.9
Atlanta        99.6     Washington     98.9
Washington     99.1     AVERAGE        99.8
Connecticut    98.9     San Antonio    99.9
Sacramento     98.5     Detroit       101.0
San Antonio    98.3     Minnesota     103.2
Detroit        96.9     Sacramento    103.5
New York       95.4     Phoenix       105.0
Los Angeles    92.1     Chicago       105.4

The interesting case this week is that of the Los Angeles Sparks, who remain dead last in the WNBA in Offensive Rating but have moved up to third in Defensive Rating after Saturday’s slugfest with the Sacramento Monarchs. The per-possession ratings have shown for the last year-plus that, for all their offensive talent, the Sparks are better at stopping opponents than scoring. Still, this discrepancy is pretty remarkable.

EXPECTED WINS STANDINGS

Team         Exp. W     Team         Exp. W
-------------------     -------------------
Phoenix        20.9     Indiana        22.9
Seattle        20.9     Connecticut    19.5
Minnesota      16.3     Atlanta        18.8
San Antonio    15.6     Washington     18.1
Los Angeles    14.3     New York       15.4
Sacramento     11.9     Detroit        13.7
                        Chicago        11.9

I feel sometimes like nobody believes me when I talk about the parity in the WNBA this year. Fortunately, Brian Agler has my back. As he pointed out Saturday, if the right teams had won and lost, it was possible for only three teams (Phoenix, Indiana and the Storm) to end the day above .500. Even the seeming extremes of the league – the aforementioned three teams and Sacramento at the bottom – come back to the pack when we look at point differential.

We’re in a league where the Atlanta Dream beat the Mercury by 30 points last week, which, incidentally, is why Phoenix is now decimal points ahead of the West in the Expected Wins standings. So far this season, there have been 13 overtime games; last year there were 17 all year. Similar story with games decided by three points or fewer – 25 last year, 24 this season already. The Storm has played a ton of close games all in a row, and it shouldn’t be a surprise anymore. The league is that even.

Differential also suggests the Sparks and Silver Stars have a pretty good shot at surpassing the Lynx with their additions. In the East, the Liberty and Sky retain their anomalous flip-flopped positions.

WARP LEADERS

Player               Tm   Win%   WARP
-------------------------------------
Nicky Anosike       MIN   .753    5.1
Diana Taurasi       PHO   .762    5.0
Tamika Catchings    IND   .743    4.9
Lauren Jackson      SEA   .752    4.7
Becky Hammon        SAS   .746    4.6
Jia Perkins         CHI   .698    4.2
Shameka Christon    NYL   .680    3.7
Cappie Pondexter    PHO   .622    3.6
Sancho Lyttle       ATL   .663    3.4
Charde Houston      MIN   .665    3.0

It looks like we’ve got a very interesting race for MVP shaping up down the stretch. Last week, Q handicapped the field and made Nicky Anosike his favorite, which surprised even me. However, her net plus-minus numbers back up what her Wins Above Replacement Player also show in terms of her indispensibility tot he Lynx. Now, things have tightened up and we have five players separated by a half a win. Any of them – or Cappie Pondexter, who still comes out low by my numbers – have the chance to seize control and become the favorite with a strong finish to the season.

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