lessthanjake wrote:LeBron James never had a +15 net rating in even one single season when on the court with Wade, with Davis, with Kyrie, with Bosh, or with Kevin Love. Michael Jordan was simply better as a force multiplier with other great players, and this is yet more evidence of it.
And I said it supports MJ’s GOAT candidacy because a +15 net rating with a player’s best teammate is “not something most GOAT candidates achieved as far as we know.” If you want to say MJ, LeBron, Kareem, and Russell are GOAT candidates, then we know LeBron hasn’t achieved it, and we do actually have at least some data for Kareem with Magic and I don’t *think* it gets that high either (though I know it is very good, and someone can correct me if I’m wrong). So I’d say that is supportive of the idea that “most” GOAT candidates haven’t achieved it “as far as we know.”
I’d also note that it’s highly implausible Russell achieved this, given that the teams’ total net rating was never *super* high (highest ever was +7.0) and Russell played incredibly high minutes so he was out there almost all the time. It’s technically *possible* but what would’ve had to happen for this to be the case for Russell is that the Celtics were incredibly good with Russell and his 2nd best teammate on the court while also actually being genuinely quite bad with Russell on and that 2nd teammate off. For instance, let’s take that year where they had their highest ever net rating—the 1961-1962 season with a +7.0 net rating. Let’s say Cousy was the 2nd best player on the team (debatable at that point, but he did finish the highest of the teammates in MVP voting). Russell played 45.2 minutes a game (out of the team’s total 48.24 minutes a game). Cousy played 28.2 minutes a game. If the Celtics were +15.0 with Russell+Cousy and we assume that essentially all of Cousy’s minutes were with Russell (a pretty reasonable assumption, since Russell basically played all but garbage time), they’d have to have had a -4.26 net rating with Cousy off the court for the team’s overall net rating to come out to +7.0. Even if we assume that the Celtics had something horrible like a -10.0 net rating in the small number of no-Russell-no-Cousy minutes, they’d still have to be -3.23 with Russell on and Cousy off for it to be possible for them to have also been +15.0 with Russell and Cousy both on. And that’s in the Celtics’s highest net rating year. There’s a bit of leeway in the numbers there, since it’s possible that Cousy had a very small number of minutes with Russell off. But basically, given the Celtics’ overall net ratings and the number of minutes Russell played, it’s not really mathematically possible for Russell to have ever had a +15.0 net rating with his 2nd best teammate on the court, unless it was also the case that the Celtics were genuinely bad with Russell on and the 2nd best teammate off. And that is both implausible and also definitely wouldn’t support Russell for GOAT (and, in fact, wouldn’t necessarily even support Russell as that era’s Celtics best player!).
So yeah, I'm pretty comfortable with the assertion I made. The only thing I'll note is that my guess is Kareem + Oscar put up similar net ratings in their best couple years and that it seems plausible to me that Kareem + Magic might’ve done it at some point if we had fuller data.
Great post jake! And especially great post given what you were responding to...
*You show number that are objectively more favorable to Jordan over LeBron* Response: "im guessin it also doesnt really help vs bron, but idk how ppl find that".
*you state that don't want to turn this into another Jordan vs LeBron debate.* Response: "so i guess ill leave it to the batmans ur tryna avoid". Wow, lol

Not that these numbers are definitive or anything. LeBron absolutely still has a reasonable GOAT case. But like you say, they are supportive of Jordan's GOAT level ceiling raising. Me personally, I tend to say Russell, Kareem, Jordan, and LeBron all have reasonable GOAT cases (and I could maybe justify others like Wilt if you do dramatic criteria changes). I don't care much if you happen to have a different GOAT than me, though I do get more irritated when people start making ridiculous claims like "LeBron has the only reasonable modern GOAT case, and it's not reasonable to think Jordan's the GOAT", or vice versa. Which you'd think wouldn't be too much to ask for. Alas, even on this forum, you get people who are so sure that they're right and others are wrong that you end up getting worse discussion occasionally.
Regardless, I was just thinking of trying something similar when you posted this! Given that we know the team net rating for Kareem/Russell/Wilt and we know how many minutes they played each season, it seems like we should be able to do the math for how bad the team would have needed to be when those stars were off the court for those 3 players to match Jordan in his ON-rating and his ON-OFF. We could then do a bit of a sanity check: is this a reasonable off-rating for a team without a Top 10 player, or is this outlier bad to the extent that it seems quite unlikely.
Of course there are limitations: given how little Plus/minus data we have from the 50s–70s, it's possible that the general scaling of plus minus was different back then. Minutes and rotations were distributed differently after all. If so, someone might still be able to make an 'era-relative' plus minus argument for an older player like Russell/Wilt/Kareem, using e.g. the standard deviation of their plus minus rather than the raw plus minus. If we had the data to do this of course. I'm not sure how compelling an argument like that would be (and again, we don't have the data either way) -- I'm more just exploring the different arguments you could still make make if for Russell/Wilt/Kareem to be GOATs, in the case they end up having worse ON / ON-OFF than Jordan. Obviously if they have better ON / ON-OFF, that could be supportive of their GOAT case too.
Another factor to consider: units! On and On-off are usually per 100 possessions, rather than Per Season or something like that. Since Russell/Kareem/Wilt are playing more minutes than Jordan usually, it's possible they could look worse per 100 possessions but end up better in total season value. The argument there might be they were helping their team more per game and per season, but needed to conserve energy more on a per-possession level since they were playing more.
It's also interesting that giving peak Russell + Cousy the same ON rating as Jordan + Pippen actually mathematically requires Russell look *worse* in On-Off than both Jordan *and Cousy*! Not what I would have guessed, but it makes sense when you write out the math like that. Question: does this assume an equal pace when Russell/Cousy are on/off? We don't have any lineup pace data , so we can't do much better, but that's another source of uncertainty that could be referenced to argue that it's possible for Russell's ON/ON-Off to be comparable to Jordan's.
Edit:
second question: Let's take your methodology for Russell. As I understand it, you assumed 1) that Russell + Cousy's ON rating matches Jordan + Pippen's ON rating, 2) that Cousy's minutes overlapped with Russell's mostly (very reasonable like you say), 3) that the celtics had some "horrible like a -10.0 net rating in the small number of no-Russell-no-Cousy minutes" .... -> to see what would be required for Russell to match Jordan's ON rating (assumption 1).
What if, instead we assume 1) that Russell (or Russell + Cousy)'s ON rating at least matches Jordan's (or Jordan + Pippen's), 2) that Cousy's minutes overlapped with Russell's mostly, and 3)
that Russell's ON-OFF at least matches Jordan's? I.e., just change the third assumption, then see what OFF would be required for Russell to at least match both Jordan's ON and his ON-OFF (or do better in either). Would this be unreasonable or even mathematically possible, given the net rating and Russell's minutes?