Post#296 » by sansterre » Mon Jan 4, 2021 12:09 pm
I crunched some of these in the Greatest Player Discussion so I thought I'd repost them here:
Here are Robinson's Playoff Numbers:
Offensive Rating Pre-Duncan (RS / PS): +1.87 / +0.92
Defensive Rating Pre-Duncan (RS / PS): -3.07 / -3.27
So, assuming his teammate performance stayed constant (quite an assumption), his team's offensive performance dropped by almost a point in the playoffs, but his teams' defenses actually got slightly better. So as much of a defensive world-beater as he was in the regular season (and a ton of things point to him being at that level) he (implicitly) was better in the playoffs.
In these years, in the regular season, he averaged 54.4% of his team's combined VORP. This is a really, really, really high number. In the playoffs he averaged only 44.6% of his team's combined VORP. So his numbers fell off (as I figured they would). But 44.6% is still a ton. And here's a neat stat:
Robinson's Playoff VORP Share when the Spurs only made the 1st Round: 53.6%
Robinson's Playoff VORP Share when the Spurs made the 2nd Round: 42.0%
Robinson's Playoff VORP Share when the Spurs made the Conference Finals: 35.1%
In other words, when his teammates played better (or were better), which shrank his VORP share, his teams went farther. This, again, is a long way of saying that Robinson's teammates were very weak, and he alone could really only take them so far.
And here's the followup data:
1990: (3 games against a 108 OR + 7 games against a 110.5 OR) = 109.8 expected, 106.1 allowed, -3.65 rating
1991: 4 games against a 111.9 OR, 111.6 allowed, -0.30 Rating
1993: (4 games against a 108.3 OR + 6 games against a 113.3 OR) = 111.3 expected, 107 allowed, -4.3 rating
1994: 4 games against a 108.6 OR, 110.3 allowed, +1.7 Rating
1995: (3 games against a 109.1 OR + 6 games against a 109.1 OR + 6 games against a 109.7 OR) = 109.3 expected, 103.1 allowed, -6.24 Rating
1996: (4 games against a 110.3 OR + 6 games against a 113.3 OR) = 112.1 expected, 108.5 allowed, -3.6 rating
I'm not saying it's super-dispositive; I was just looking for evidence that his defense dropped in the playoffs using team measures and I couldn't find it. If I was looking for scaling falloff I'd check this (opponent offensive average vs playoff defensive rating):
1990: Opposition is +0.35, Rating is -3.65
1991: Opposition is +4.00, Rating is -0.30
1993: Opposition is +3.30, Rating is -4.30
1994: Opposition is +2.30, Rating is +1.70
1995: Opposition is +1.04, Rating is -6.24
1996: Opposition is +4.50, Rating is -0.60
Or, sorted by opposing offenses (best on top):
1996: Opposition is +4.50, Rating is -0.60
1991: Opposition is +4.00, Rating is -0.30
1993: Opposition is +3.30, Rating is -4.30
1994: Opposition is +2.30, Rating is +1.70
1995: Opposition is +1.04, Rating is -6.24
1990: Opposition is +0.35, Rating is -3.65
I think there's reason to think that there is *some* scaling at work. The aggregate is even, but it seems like his defense improves in the playoffs against weaker offenses, and gets worse against stronger defenses (and this is adjusted for opposition). The effect isn't huge but it definitely seems to be there.
Of course, I haven't looked at other players/teams in this way, so for all I know some degree of scaling against quality offenses in the playoffs is normal. It does look like there's something there; I'm just not sure what it means.
"If you wish to see the truth, hold no opinions."
"Trust one who seeks the truth. Doubt one who claims to have found the truth."