APBRmetrics

EvanZ · Joined: 22 Nov 2010 Posts: 307

Now that I'm implementing counterpart defense (and counterpart rebounds and turnovers), it's becoming increasingly important to get the correct matchups. I'm using the matchup files that Aaron B. has created.

I know he's very busy and can't possibly keep track of every NBA team, so I figured it might help both him and myself (and others who want or need these data) to list the position designations for each of our home teams. The idea is that if you take any five players as a unit, you would be able to sort them by their position designation, so they end up facing the correct counterpart.

It's tricky because some players will play SG at times and PG at times. So, for example, you have to think about if two nominal PG's are in the same unit, which one plays point, and which one plays the 2? The one who plays point would be a 1.0, and the other player would be a 1.01. If there was a third "point guard" on the team, he would either be a 0.99 or a 1.02. And so on for every other position.

Here's the "lineup code" I sent Aaron as an example (for the Warriors):

**back2newbelf** · Joined: 21 Jun 2005 Posts: 276

I always figured that when I had to do this I'd just sort players by weight, then assign center position to the one with the highest weight and so on. I think it would be a pretty good approximation
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DSMok1 · Posted: Tue Feb 01, 2011 10:51 am Post subject:

Here's OKC, as best I can figure:

EvanZ · Joined: 22 Nov 2010 Posts: 307

basketballvalue · Joined: 07 Mar 2006 Posts: 208

Thanks for the help everyone. My list was seed with Crow's input from way back, but it always evolves and I'm always looking for input.

Thanks in advance,
Aaron
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EvanZ · Joined: 22 Nov 2010 Posts: 307

Oh, one more thing I should say about this that might be interesting.

We can use the matchup file to count the number of times a player was slotted at each position and find his "true" position. So think of these designations as initial "guesses" which can then be iteratively refined by actual data. I suppose I should volunteer myself to do these calculations. Smile

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Crow · Joined: 20 Jan 2009 Posts: 825

The older thread

viewtopic.php?t=2061&highlight=position

DSMok1 · Posted: Tue Feb 01, 2011 1:27 pm Post subject:

greyberger · Joined: 27 Sep 2010 Posts: 53

I'm not sure what to do about the Spurs backcourt - Parker is obviously PG and Manu is SG when Parker's in, but when Parker is resting the guards are Ginobili George Hill and Gary Neal. I suppose Manu is the PG in these lineups but he's 6-6 and as much a finisher as a creator.

EvanZ · Joined: 22 Nov 2010 Posts: 307

greyberger · Joined: 27 Sep 2010 Posts: 53

Looking at it that way, Manu at 2.0x is probably the best compromise. The Spurs:

EvanZ · Joined: 22 Nov 2010 Posts: 307

That looks about right to me, too.
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kjb · Joined: 03 Jan 2005 Posts: 865 Location: Washington, DC

Wizards guesstimate

Wall 1.0
Shakur 1.01
Hinrich 1.5
Young 2.01
Martin 2.99
Howard 3.0
Thornton 3.1
Lewis 3.2
Booker 3.5
Blatche 4.0
Yi 4.1
Armstrong 4.8
McGee 4.99
Seraphin 5.0

Mogilny · Joined: 05 Aug 2010 Posts: 25

deepak · Joined: 26 Apr 2006 Posts: 665

Is this more for defensive matchup purposes, or the offensive role of the player?

On the Rockets, Adelman likes to use Brooks and Lowry together a lot. Typically, Lowry will guard the opposing 2 because he has a stockier build. But as far as offensive role, Lowry is more of a "true" PG while Brooks plays more of a scoring role.