Doctor MJ wrote:DavidStern wrote:No. You can't do it that way. Look, you assume that - imaginary example - when in playoffs will met team A - 90 drtg and team B - 110 ortg team, team's B offense would be called by you improved when in playoffs against team A they would had 95 ortg (because it's more than team's A RS drtg...). That's wrong way to look at this and I have done something similar, but only with Pacers ortg.
This is not what he's doing. He's quite clearly using that sort of differential both in the regular season and in the playoffs. An improvement in that comparison is a completely valid way to look at things.
?
Could you explain it on some example?
Because I don't see it. For me it is as I said: Elgge is doing something like that:
Team A: 90 RS drtg
Team B: 110 RS ortg
They met in playoffs and Team B have 95 ortg, so is means that their offense improved...
That doesn't make sense at all.
Look, that's exactly what Elgee said:
Pacers RS relative to league, then PS relative avg. opponent DRtg
90 +3.4 +0.0
In 1990 Pacers had 111.5 ortg in RS
In playoffs 103,5 ortg
Pacers opponents RS drtg: 103,5 - and that's why Elgee's value here is 0,0 (Pacers playoffs ORTG minus Pacers opponent regular season DRTG)
DavidStern wrote:What we have to do is look at "expected value" = (Pacers opponent RS drtg + Pacers RS org)/2. And if Pacers playoffs ortg will be higher than expected value then yes, we could say their offense was better.
No, that's completely ignoring the fact that defense picks up in the playoffs.
And how Elgee's method adjust for that?
By that way of doing things, the vast majority of offensive teams would "disappoint" come playoff time, which is a tip off that it doesn't make sense:
If you're expected value leaves you disappointed 90% of the time, you're an unreasonable optimist.
But that "90%, majority would disappoint" isn't true.