1. Let's start with the fact that despite the project focusing on one-year peaks, I actually weigh surrounding seasons a big amount. I don't like the idea of separating what happened in the one "peak" season from the rest of player's prime. Of course there are situations when it is necessary to focus on the single year (like Walton), but I still want to see as big of a sample as possible and lack of consistency hurts given player in my evaluation.
2. I really like the discussion so far and plenty of data-based arguments have been provided, for which I am really thankful. With that in mind, I will focus more on my amateur tracking eye and what I collected throughout the years for the simple reason - I don't think at this stage of the voting one player clearly separates himself from the rest data-wise. The amount of long, excellent posts in this thread resulting in different lists only supports that. I want to point out that I don't mean to ignore stats - quite the opposite, I will use stats in my explanation - but I just don't think you can separate one player from another using only stats.
Without waiting longer, let's start my list

1. 2011/12 LeBron James (HM: 2008/09, 2012/13)

So the start isn't surprising, but don't mistake that with an easy choice. I considered at least 2 another guys I have in my next spots.
LeBron James is well known to everybody and smarter people than me presented his case. I will just add one thing that puts him on the top for me - the first point I mentioned on my criteria. LeBron is a longevity GOAT and I say it in a positive manner - he has an insane amount of top tier levels. You can basically pick any of his top ~8 seasons and he'd compete for the number 1 spot anyway: 2009, 2010, 2012-14, 2016-18. Hell, some even consider 2020 that high and although I wouldn't, I understand the rationales behind that logic. I think the sheer amount of amazing RS and PS basketball from James just puts him at the absolute top on that list, even though I am not really sure if he peaked 100% higher than my next players.
Why 2012? Well, in the case of someone with so many great seasons I simply decided to pick the most well-rounded one of his career. I know that some people don't like that version of James due to his poor 3P shooting in the postseason, but to me the fact that he was so freaking incredible without his usual jumpshot almost worked to his advantage. Besides, I think the "no shooting" argument is clearly overstated, these are his midrange numbers (numbers per nba.com):
2009 RS: 36.8% on 6.5 FGA
2010 RS: 38.8% on 6.4 FGA
2012 RS: 42.3% on 7.2 FGA
2013 RS: 43.2% on 5.3 FGA
2014 RS: 38.5% on 4.2 FGA
2016 RS: 37.5% on 4.1 FGA
2017 RS: 36.2% on 3.6 FGA
2018 RS: 38.9% on 3.7 FGA
2009 PS: 47.4% on 6.7 FGA
2010 PS: 38.3% on 5.5 FGA
2012 PS: 35.9% on 6.3 FGA
2013 PS: 37.2% on 5.3 FGA
2014 PS: 41.7% on 4.8 FGA
2016 PS: 37.3% on 3.6 FGA
2017 PS: 37.3% on 3.3 FGA
2018 PS: 48.8% on 5.5 FGA
Taking everything into account, I think 2012 was the best midrange shooting RS for James and although his efficiency dropped in the playoffs, it was still within the range of typical James performance. I just think people gets caught up too much with 3P% and TS%. 2012 was a very rough season for offensive stars and James did incredible things against quality competition.
I really like James at the 4 position, playing the mixture of PG and bigman on offense. I also think that position suits him the most on defense, which is why I prefer Miami version over 2009 for example.
Sidenote, but it's not surprising that two best James scoring postseason runs (2009 and 2018) were driven by outlier midrange shooting efficiency.
My two next choices would be 2009 and 2013. Although I do think that 2013 struggles against the Spurs (truly ATG defensive team) are a bit overstated at times, it's not like 2012 faced pushovers - 2012 Celtics were incredible defensively on their own. If we take a look at James PS offensive numbers, all these seasons are very close (sourced from thinkingbasketball.net):
2009: 37.2 pp75 on +9.5 rTS%, 12.0 BPM, +7.3 rORtg, 15.0 BoxCreation
2012: 31.6 pp75 on +6.5 rTS%, 8.2 BPM, +8.4 rORtg, 8.3 BoxCreation
2013: 27.6 pp75 on +7.3 rTS%, 8.3 BPM, +8.2 rORtg, 9.4 BoxCreation
2016: 28.2 pp75 on +5.7 rTS%, 9.5 BPM, +11.4 rORtg, 10.4 BoxCreation
I wouldn't consider any other season here. 2010 has the PS injury, 2017 and 2018 has RS coasting. I wouldn't pick 2014 simply because of the lower defensive motor. Then there are all ATG, top tier seasons and you'd fool yourself if you think that the choice between them is easy.
I am aware that 2012 version has less playmaking volume and not top tier efficiency, but he was probably the best defensively in his career and I just like that role for LeBron more than an ball-dominant P&R maestro of the late 2010s or oversized SG with GOAT athleticism from the late 2000s. You can nitpick any hole you want, but all these versions led to remarkable offensive results (and unlike late 2010s Cavs, 2012 Heat was a defensive minded team), all were utterly dominant and I don't find any reason choose any season over my favorite version of LeBron. I think there are two things that made James GOAT candidate - his physical dominance and his mind. 2012 is a perfect sweetspot for these two, though I guess 2013 is up there (for RS alone, I'd take 2013 - it's mind blowing how ridiculous he was back then).
I will note that if you want to take a look at offense only, both 2014 and 2018 have extremely strong cases for the best offensive seasons ever. I just think you need to take two-way monster to stay at the top in such a stacked competition.
2. 2002/03 Tim Duncan (HM: 2001/02)

My basketball idol, possibly the greatest two-way player the league has ever seen... and he's still not recognized as such. Maybe it is because he got the label of the "greatest PF in history" and ironically that puts him out of the discussion for the best true bigmen of all-time. That's unfortunate, because Duncan had 100% center's body, played center's game and had two-way impact of the best centers the league has ever seen.
Standing at +/- 6'10 barefeet and peaking around 260 lbs, Duncan was bigger than many of the ATG "true" centers, like Hakeem or Russell. He played even bigger than that, due to the two things that separated him from the pack - extremely strong and balanced base + insane standing reach. I don't have any verified data on Duncan's reach or wingspan, but it's silly how ridiculously easy it was for him to dominate based on his body type. Of course, that would not work without his great basketball IQ and I truly believe he was one of the best ever at that.
So far, I tracked 35 Duncan games from 2002 and 2003 seasons. I still have 5 2003 finals games left, but the sample started to stabilize. We all know his numbers and his postseason raise, but I want to go a bit further with the scoring breakdown.
Duncan was actually quite versatile offensive player. A lot of people view him as the last dominant post-up heavy guy (rightfully, he was very good), but I think it sells him a bit short. In my sample, Duncan averaged 19.3 FGA, only slightly higher value than the average postseason numbers. Out of them, "only" 7.9 FGA came from the post up possessions. Don't get me wrong, it's a lot when you use 2025 lenses, but it's nothing when you compare it to the ridiculous number of 15 FGA from 2000-01 Shaq (46 games sample) or the earlier era guys. Duncan wasn't a straight up post player, he was used on a number of ways: spot up isolations, P&R game, rebounds, even transition. My sample shows him taking around 2.5 FGA from P&R and he didn't have a reliable perimeter creator at that time. At the same time, he also ran P&Rs as the ball-handler with Robinson quite effectively in limited possessions. Duncan's handles are generally very underrated, there are few centers that stood out more relative to the era in that regard (one of them will join the voting next):
https://youtube.com/clip/UgkxIz6pBdC9-se5et24jdSPJhUx386DBzTF?si=IY-zf9lpIkjuOXBy
He wasn't an elite shooter, but his midrange game was a reliable counter to his inside game (in most cases at least, will touch it later):
2001 RS: 41.6 FG% on 6.7 FGA
2002 RS: 40.3 FG% on 6.7 FGA
2003 RS: 41.0 FG% on 5.4 FGA
2004 RS: 39.5 FG% on 6.0 FGA
These numbers are quite respectable on a significant volume. The numbers in the postseason remained consistent outside of 2002 run:
2001 PS: 34.2 FG% on 5.6 FGA
2002 PS: 29.4 FG% on 7.6 FGA
2003 PS: 40.7 FG% on 5.6 FGA
2004 PS: 43.8 FG% on 6.4 FGA
The 2002 run is quite hard to rate. When you watch 2002 WCSF series, there are two things that are very clear:
1. Duncan had no help in that series. With injured Robinson, Duncan was forced to do everything on offense while being the defensive anchor on the other side of the ball. Some people may think it is overstated, but it truly isn't. Duncan didn't have any offensive creator and dealt with such coverages all game long:
As such it is incredibly hard to blame him for mediocre shooting and high turnover numbers.
2. Duncan struggled against Shaq coverages. O'Neal didn't guard him for the majority of the games, but when he did, Duncan really struggled to create reliable offense:
Without physical advantages down low (especially length advantage, that was critical for Duncan), he was often forced to rely on his jumpshot and it just wasn't good enough as the go-to option.
Duncan was a flawed offensive centerpiece, no doubt about it. He was good enough ISO scorer and good enough playmaker to carry the mediocre casts to decency (they had positive rORtg in all 2002-04 sample in the playoffs) and to destroy mediocre defensive teams. That said, I think people underrate the secondary skills Duncan provided on that end.
Passing skills
Duncan's passing skills are often associated with his excellent ability to find open shooters out of the double teams in the post. I think that sells him a little short though. Timmy kept improving his playmaking throughout his career and by 2003, he could thrive in many situations.
https://youtube.com/clip/Ugkx08eFktU--3XuVqb_QNS6BEh1qeUi38uq?si=bOkF34SQja_xA90g
Take a look at this play - Duncan set a screen for Parker, he popped out to the midrange and when he got the ball, he immediately attack the paint, sucking in 3 Lakers defenders. Then he made a no-look pass to Robinson under the basket.
Another similar play from the same game:
https://youtube.com/clip/UgkxhdQWCijuCDwy4Bvy_Ra6K1pVWLfknJH9?si=1fZFpUxt1l5Mfhey
Duncan absorbing defensive focus and creating open layup as a roll-man:
https://youtube.com/clip/UgkxpTRP77AkKCSAwQ8jLXrZUibEPgggOB1K?si=5yS6NvytZ2hEtpQd
This is another example, this time a bit more advanced read. Duncan plays P&R, gets the ball at the key after a screen and collapses defense. He gets open guy in the corner, but he knows that Manu is a better shooter, so he makes a subtle pass fake to force Kobe to rotate and gives Manu open shot (Manu decides to drive and misses it).
Duncan didn't have top tier vision, but he was very good passer from technical perspective. His passes were fast and crisp and they usually reached the target accurately. Below I attach an example from quick transition play, where Duncan makes a perfect bounce pass for Parker:
https://youtube.com/clip/UgkxvfdHRiMJhADEF7GjAL6G80OJpd7AoBTA?si=A5idUVJAiOA_dMLE
This time he runs in transition by himself and tricked a defender with a no-look pass leading to a foul:
https://youtube.com/clip/UgkxyARyFHiPm_zqHM1WXaKeosJG-PShM9ym?si=8BxRul_OlFJ69gTq
Such plays rarely get in highlight reels, but they are very valuable. Duncan was excellent defensive rebounder and outlet passer, which also gave Spurs offense transition chops, even in this slow, grindy era.
Duncan was also a good "connective tissue" passer, here you can see him finding Robinson inside with a quick touch pass against Dallas zone:
https://youtube.com/clip/Ugkx8Wheyie6x9ePFdpcpv20SDeOAj7OGQGc?si=3HXaECwONtJzWpIn
Another nice example:
https://youtube.com/clip/Ugkx5u23CE8_VjxOFnNb93ADvf49VSkTPjTm?si=eErCbnHUjW04EePi
This touch pass in transition is truly a top tier pass:
https://youtube.com/clip/UgkxsoMOvNrjd_bxU9mhCm_I2x48z9OTeBwD?si=lTKKHpven2VBhpat
To summarize, Duncan wasn't just a "find open shooter out of double" passer, he provided a lot of double in P&R situation, as a transition starter, as an entry passer and in all these secondary role situations. I know that people often compare him unfavorably to Garnett, which led to the idea that Duncan was just a basic center passer, but Timmy was truly a remarkable passer at his peak and that's the main reason why I decided to put 2003 slightly over 2002 - because Duncan gradually improved as a passer throughout his career (probably peaked in that regard in late 2000s).
Secondary scoring skills
Duncan was comfortable running short P&Rs. He could not only find a roll man, but also create for himself after a screen:
https://youtube.com/clip/UgkxAXt88kV9zvJgXdFKYYq4APRi75Z5jefO?si=L0p3UGRyXElu1ZXi
He had also a versatile faceup game for a center, as he could both create shots off a drive:
https://youtube.com/clip/UgkxuqHRK3a_xPRXRW5R2D69A_IbAn9CNvSx?si=SItPKy_BIAu6Gxc3
and use his decent midrange game:
https://youtube.com/clip/Ugkxe4Evqgm8tDPeZrgxBAzcBeU9cGxQ_HP8?si=wTAsn8joRQsPG4Tk
https://youtube.com/clip/UgkxYb8cz0ZC7ywDLN9HiyJ41uSqV0aFGF6Y?si=l8Ky6ZTbvaTRNt8F
Of course, he was also an excellent offensive-rebounder. In my tracking sample, Duncan scored 3.2 ppg on 67 FG% from putbacks, that's not GOAT-tier rebounding but still very valuable addition to his well rounded game.
It's very clear that Duncan is the weakest offensive player in this thread (with the exception of Garnett), but people definitely overstate how problematic his offense was. In 2002-04 period, the Spurs had 107.3 ORtg in minutes Duncan played and 99.7 ORtg without him on the floor. That's roughly +4 -> -4 rORtg swing, the Spurs just didn't have much offensive talent around him. The raw ON ORtg goes slightly down in the playoffs (105.6) but the OFF number is just ridiculously low (92.7). It was a very clear carryjob, even if Duncan didn't show fancy boxscore numbers.
Some people point out that Duncan's offensive impact regressed during the mid-2000s with reduced role, but I think we can realize a few things. The Spurs offense still showed a remarkable difference with and without him on the floor:
2005-08 Spurs with Duncan: 110.6 ORtg
2005-08 Spurs without Duncan: 102.6 ORtg
The numbers are basically identical for the playoffs. If you want to isolate Duncan and Manu, then the Spurs look basically the same with Duncan and with Manu (again, playoffs show similar story):
2005-08 Spurs with Duncan and Manu: 113.4 ORtg
2005-08 Spurs with Duncan, without Manu: 107.2 ORtg
2005-08 Spurs without Duncan, with Manu: 108.0 ORtg
2005-08 Spurs without Duncan, without Manu: 96.8 ORtg
The idea that Duncan didn't scale well enough with additional offensive talent doesn't seem to agree with what actually happened. It's true that their raw rORtg doesn't look amazing in the RS, but the Spurs were heavily defensive slanted teams and their rORtg in the playoffs for that period was still +4.8 in 2005-07 period (I excluded 2008 run because of injuries). Of course all of that should be contextualized - Duncan wasn't at his peak in that period, his mobility regressed quite significantly due to injuries.
I still don't understand what real scenario proved that Garnett scaled better to offensive talent than Duncan. I mean, we have seen Garnett in comparable situation in 2008 and 2009 (pre-injury) and the results didn't scream that Garnett did things that Duncan would never be able to. I am afraid that this whole idea that KG scales better than Duncan is based more of the idea of scaling players than the actual basketball facts. Garnett is often seen as this idealized version of modern swiss-army knife player that can do everything at elite level, while Duncan is seen as an obsolete post up guy who became worse and worse with time, but that is not based on the reality. Duncan himself was extremely well-rounded player and the biggest differences between the two are very subtle - Garnett was more intuitive passer and better midrange shooter, Duncan was better inside scorer and offensive rebounder. It's not like Duncan needed to play this 4 out offense to maximize his offensive impact, he did just fine as a secondary creator, P&R partner and passing big. The beautiful game Spurs happened in the mid-2010s in part BECAUSE of Duncan, not in spite of Duncan.
Anyway, it is not a knock on anyone having Garnett higher, I just wanted to present my thoughts about it.
Unfortunately, I don't think I will find the time to focus on Duncan's defense, at least not now. A shame that I didn't gather the clips I do for other guys, but maybe I will make the separate post about his defense.
2023/24 Nikola Jokic (HM: 2022/23)
I think Jokic has a very solid argument for the GOAT offensive player and the last 3 years were just remarkable all-around. I think especially his RS performances put him extremely high, because you just can put 4 mediocre players around him and he'd still produce excellent offensive results.
I was more interested in the postseason peak for Jokic. A lot of people don't see any problems with his postseason peak and I am not here to thrash him at all, but we have to remember that the stake is so high in this thread that any criticism will end in some kind of nitpicking.
I think we can all agree that Jokic peaked somewhere in the 2022-25 range. All of his RS performances are remarkable during that period and some may argue that he just kept improving. If we take a look at the 4 years playoff runs for the top 3 big candidates, this is how Jokic stacks up:
2000-03 Shaq: 30.2 pp75 on +6.1 rTS%, 3.2 ap75 to 3.1 tov75, 12.9 ORB%, +8.0 rORtg, -2.5 rDRtg
2002-05 Duncan: 26.0 pp75 on +4.1 rTS%, 4.3 ap75 to 3.5 tov75, 10.8 ORB%, +2.8 rORtg, -6.5 rDRtg
2022-25 Jokic: 27.3 pp75 on +5.2 rTS%, 8.1 ap75 to 3.5 tov75, 9.2 ORB%, +3.0 rORtg, -1.8 rDRtg
Jokic doesn't really translate his GOAT-tier efficiency from RS and his defense becomes a bit problematic. Of course, you can point out that I sampled 2022 which might be unfair, but it's only 5 games and if I exclude it from the comparison, the boxscore numbers would look clearly worse. I still give Jokic the massive edge over Duncan offensively and a reasonable advantage over Shaq, but I wonder if his style of play doesn't get slightly easier to gameplan vs Shaq's simpler, but remarkably effective approach.
Looking at the scoring numbers, which don't look that spectacular for Jokic (he's only slightly better than Duncan here), I decided to track 2023 and 2024 postseason scoring numbers to see how Jokic scores in the post, out of the P&R coverages etc. I will provide details later.
2000/01 Shaquille O'Neal
Will edit later