LukaTheGOAT wrote:lessthanjake wrote:PooledSilver wrote:^ why are you bringing up the career RAPM results that J.E cautioned that didn’t adjust for the rubber band effect, age, and “coaches?” and bringing up “non prime years” which absolutely is going to hurt players who finished their careers more + Lebron being out of his “impact peak” for years now
It feels disingenuous to talk about Jokic’s results being so impressive despite him being early in his career, his career RAPM is high BECAUSE of those early years being far better most players early years or especially post prime washed years. If you go by ranks for example, per shotcharts (which has issues but is way better than the other sites don’t get me wrong) 3 of his “top 5” rapm years were years 1-3.
He already posted an updated RAPM career sheet adjusting for these things. The rankings were (top 12 cuz that’s where KD is)
Lebron - 10.8
Garnett - 9.5
CP3 - 9.4
Stockton - 9.2
Curry - 8.5
Ginobli - 8.5
Jokic - 8.5
Dirk - 8.4
Duncan - 8.2
Kawhi - 7.7
Shaq - 7.3
KD - 7.2
J.E already posted an updated numbers on Twitter. The coaching adjustment can be a bit weird and age adjustments are a bit weird with bron specifically but it’s pretty much the exact same results as you would expect
As I said above, an age adjustment obviously favors LeBron here, and it does go to career value and whatnot. Jokic is highly unlikely to have a superior career to LeBron—who was better at a young age than Jokic and virtually certainly will be better at an old age than Jokic. But this thread isn’t about that. I’m also not a fan of a “coaching adjustment” and I think neither are most people here, but that’s a rabbit hole not worth going down. Ultimately, one can always layer on different adjustments and box score components and whatnot and get to fairly different numbers or rankings. We see that all the time, with different impact measures saying different things in the same season. We also see that pretty clearly with JE’s numbers, where the addition of certain adjustments changed the rankings. I’m not positing that Jokic will be #1 in all versions of impact data. He wouldn’t (nor would anyone else). But the fact that he was #1 in the pre-controversial-adjustments version of JE’s 1997-2024 data certainly suggests that Jokic’s impact numbers are up there in GOAT-tier territory, rather than that he “has no impact case” and gets “clobbered” by other players, as was suggested. That is the point I’m making. Impact measures are inherently flawed and can be massaged a lot of different ways, such that we should take them with a real grain of salt, but if a guy shakes out as well in them as Jokic does, then he does have an “impact case,” even if he’s not the only one with an impact case. And beyond that, he does also have a box score data case too. And, for me, both of those things just validate the fact that my eye test tells me he’s the best player I’ve ever seen.
I mean Jokic's per-possession impact by RAPM was greater than Lebron's the first 3 years I would argue, so I don't get the idea that his age-adjusting hurts him.
Jokic's NBA Shot Charts LA RAPM rankings.
Rookie Year (Age 20): 7th
Sophomore Year: 12th
Third Year: 6th
Lebron's PI Englemann RAPM ranking
Rookie Year (Age 19): 112th
Sophomore Year: 24th
Third Year: 21st
If we look at Intraocular APM
Jokic
Rookie Year: +3
Sophomore Year: +5.7
Third Year: +3.9
Lebron
Rookie Year: +0.1
Sophomore Year: +2.5
Third Year: +4.6
Also in multi-year RAPM
-NBAShot Charts 3-Year RAPM (15-18), Jokic ranked #7.
-NBA Shot Charts Luck Adjusted 3-Year RAPM (15-18), Jokic ranked #4.
By DARKO, Jokic had a stronger star earlier in his career
Jokic looks better than Lebron in very early career RAPM, so I am not sure if I am buying that Jokic's RAPM would be suppressed against Lebron. Jokic came out the strong with a historically GOATed rookie profile for someone of his age, that I think a lot of people slept on due to draft position, etc.
Yeah, that’s all true and quite interesting! And it is consistent with things I acknowledged in a couple posts I made in response to a similar point. But it is nevertheless also true that Jokic’s impact in his true prime was still a good deal higher than it was in those years and that his true prime years make up an abnormally low percent of his career thus far (not to mention that the impact numbers in his weak-prime years actually went down and don’t help him). It can actually be simultaneously true that Jokic’s impact in his not-at-all prime years was superior to LeBron’s impact in LeBron’s not-at-all prime years, while still being true that taking a career-wide measure isn’t actually particularly helpful to Jokic, because these guys had their best impact in their true prime and LeBron’s true prime is a substantially larger percent of his career.
Either way, though, I’d direct you to the second paragraph of the first post I made that responded to this sort of point (
https://forums.realgm.com/boards/viewtopic.php?p=111820519#p111820519) for some broader discussion of what this all means for purposes of this topic and clarifying what I’m saying. Basically, it’s of course true that someone with higher career-wide RAPM doesn’t necessarily have better peak RAPM (and peak is the relevant thing in this thread), even if that person has a prime that makes up a smaller portion of the data set. I’m not saying it does—since obviously the factors we are discussing above are complicating factors that can prevent us from drawing that type of quick/automatic conclusion. But I think we should acknowledge that impact measures like RAPM are really not a precise science, and we should conceptualize them as something with a confidence interval. And to me, if we are looking at someone who is #1 in a career RAPM measure, and has also looked amazing overall in season-by-season impact measures in his best years, I find it pretty easy to conclude that I think he’d be within the confidence interval of GOAT peak in terms of impact measures (and certainly that he’s not “clobber[ed]” by others, as was suggested in this thread). He is, of course, not the only player who I’d come to that conclusion about—which is reflective of the fact that we are talking about measures that are flawed and have a good deal of uncertainty (and where directly comparing different players’ RAPM/impact values between different years isn’t really methodologically valid, because the scaling and whatnot each year will differ). So that by itself wouldn’t really be the lead argument for Jokic as the absolute GOAT peak.
For me, as I’ve written many times in this thread, my view is more that my eye test tells me he is, and I think the box numbers and impact numbers are within the confidence interval for GOAT peak (with the box-number part probably actually being a bit stronger even than the impact numbers) and therefore are consistent with my eye test conclusion. Of course, if someone else’s eye test tells them a different answer, then it’s certainly possible that that other player that their eye test favors would *also* have box score and impact numbers consistent with being the GOAT peak. Indeed, for the players most commonly seen as GOAT peak candidates, I’d say that that *would* be the case. There are other reasonable answers here—which is why I said in my first post in this thread that “I wouldn’t go so far as to say he’s “clearly” ahead of someone like LeBron (or a few of the other very top peak guys)” and that, while I pick Jokic, “there’s significant amounts of subjectivity and uncertainty at play, so I think there’s certainly room to disagree.” (
https://forums.realgm.com/boards/viewtopic.php?p=111803731#p111803731).