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A Statistical Comparison: Yao, Hakeem, Moses, and Ralph.

Discussion in 'Houston Rockets: Game Action & Roster Moves' started by MacBeth, Feb 2, 2004.

  1. MacBeth

    MacBeth Member

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    This is going to be a two part examination of the relative effectiveness of each player in their first two season. For the purposes of compling a relative measurable, I have decided to do a per 48 minute study. The second part will be to examine what Yao's relative statistics would be if you pro-rated his current level of performance over the level of opportunities the other players experienced.

    It should be noted that this is not an overall evaluation, as Hakeem, Ralph and Moses had the endurance to sustain their value over longer periods than Yao has thus far been able to do, but is merely a study of how effective Yao is relative to those players when he is actually on the floor, and whether or not his performance has dictated his offensive opportunities, as some have suggested.


    Per 48 minutes, Hakeem averaged 29.3 pts, 15.7 rebounds, and 4.0 blocks in his first 2 seasons. He took 21.9 shots ( making 11.6) and 9.7 free throws (6.1) per 48.

    Moses Malone averaged 23.2 pts, 20.3 rebounds, and 2.7 blks. He took 17 shots( 8.3) and 9.2 (6.5) free throws.

    Ralph Sampson averaged 29.3 pts, 14.7 rebounds and 2.1 blocks. He took 23.8 shots (12.2) and 7.3 free throws( 4.9).

    Yao Ming has averaged 23.1 pts, 13.6 rebounds, and 2.8 blocks per 48 minutes. He has taken 16.4 shots ( 8.5) and 7.7 (6.1) free throws.

    While there are differences, the only two statistics which dwarf Yao per 48 minutes are Malone's rebounds and Hakeem's blocks, and in the latter Yao ranks second. The scoring differences are easily accounted for by the even greater shot taken differences, and the one player who took approx. the same as Yao ( Malone) made resulted in almost exactly the same points, while taking many more free throws.

    Some interesting notes. Re: Yao's aggression/free throws...Despite taking about seven and a half fewer shots per game than Ralph Sampson, Yao already goes to the free throw line more, and makes considerably more, and makes as many as Hakeem and almost as many as Moses did.

    On the downside, Yao does rank last in rebounds, trailing Ralph by 1, Hakeem by 2, and Moses by over 6(!) per 48 minutes.


    Now for the second part. Forget per 48 for a second, and pro-rate Yao's stats over his current per game basis, but afford him the shots that each of these players took. And to remain accurate to Yao, we won;t assume the same number of free throws as the others, as it could be argued that different players gain different free throws/shot depending upon their style. In a way this is a disservice to Yao vs. Malone, as many of Moses' shots translated into fouls instead of makes, but we'll go with it.

    If Yao took as many shots/minute as each of these great Rocket's centers of the past and still played the same number of minutes as he currently does, and maintained his own fta/fga ratio (.469), this is how many ppg he would be averaging right now.

    * with Hakeem's attempts: 21.2 ppg.
    * with Moses' attempts: 16.5 ppg.
    * with Ralph's attempts: 23.1 ppg.


    Pro-rate his numbers over 48, and Yao actually outsocres all of the above, some by a fair margin.


    Combine the two different statistical examinations, as superficial as they are, and a few things become clear.

    1) Yao is at least as offensively efficient and effective relative to his predecessors given his opportunity.

    2) Yao generates almost as many or more fouls and makes as many or more free throws as Hakeem, Moses, and Sampson when on the floor.

    3) Yao outblocks all but Hakeem, who he trails by a considerable margin.

    4) Yao is clearly behind in rebounding, although he is close to Hakeem and Sampson than they are to Malone.



    As such, it is clear that Yao's strenghts at this point are offensive effectiveness and shot blocking. His rebounding needs to improve, although the bar is being set by heavy hitters.

    But by far the greatest areas he needs to improve, or need to be improved for him are endurance and opportunities. Whther he can sustain more minutes is an unknown, but it is likely that his minutes are at least in part limited by his endurance.

    The opportunities is another matter, and subject of much debate. This study does not clarify whether Yao's attempts are limited by a lack of aggression, or a lack of teammates passing him the ball. The free throws already generated, while not conclusive, do suggest that the aggression is not as much of a concern as many would suggest. What this study does examine is the question about how effective Yao is, as is, relative to other Rocket centers when on the floor, and how effective he should be were his opportunities increased by whatever means.

    Were both his opportunities and endurance increased, offensively, while maintaining his current effectiveness,we would be looking at a dynamo which would surpass Hakeem, Sampson and Moses as a scorer.
     
  2. HOOP-T

    HOOP-T Member

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    Too much time on my hands........
    Too much time on my hands........
    I've got too much time on my hands...

    T't't't'tickin' away!!!
     
  3. HOOP-T

    HOOP-T Member

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    Oh, good thread though. :)
     
  4. emjohn

    emjohn Member

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    Nice analysis - but I personally hate the "per 48 minutes" stats.

    I'll say this, Yao is only scratching the surface of his potential. Whether or not he taps it completely is an unknown, but he certainly has the tools to become a HOF player.

    Evan
     
  5. MacBeth

    MacBeth Member

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    heh heh. Actually didn't take that long, and have been speculating on doing this for a while. But I think it shows that A) Yao needs to do whatever he can to improve his endurance and rebounding. and B) More importantly, as a team, the Rockets need to do WHATEVER IT TAKES to get Yao more opportunities. As a scorer relative to opportunities, especially given his X factor ( free throw %) we can ride Yao at least as much as we rode Hakeem and/or Ralph their first few years, and more than Moses.

    That, I think, is important.
     
  6. horryrules

    horryrules Member

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    Great post. Would loved to have seen Yao play b4 zone defense was legalized. The zone is definitely limiting his opportunities in my opinion.

    But I agree endurance seems to be his biggest issue to date, esp as it relates to his rebounding.
     
  7. MacBeth

    MacBeth Member

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    I agree, but it was the only way to do a viable relative scale. Per minute data is even harder to evaluate. The last one, ppg, was based on Yao's minutes as is, and speaks volumes, IMO.
     
  8. Toast

    Toast Member

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    You could have summarized most of that post by saying:
    Yao shoots a high % but not a high #.
     
  9. MacBeth

    MacBeth Member

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    Inaccurate.
     
  10. spacepimp

    spacepimp Member

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    the less you play the better your 48 mpg stats look, the problem is that hakeem, ralph, and moses avg. 20 ppg and 10 rpg with out the help of 48 mpg stats.
     
  11. A-Train

    A-Train Member

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    Kelvin Cato is the MVP of the per 48 minute league...
     
  12. SamCassell

    SamCassell Member

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    Are you ignoring the obvious correlation between FGA and FG%? I mean, I could draw up a numbers analysis demonstrating that Otis Thorpe was the greatest player to ever play with the Rockets if I ignored that relationship. Yao presumably is taking the shots he is most comfortable with right now, and passing when he is not comfortable. Hakeem and Moses shot the ball in sitations where Yao passes, instead (double teams, for instance). An increase in his shot attempts would of necessity come out of those situations where he feels less comfortable taking the shot. His shooting percentage would certainly be reduced if he took more shots.
     
  13. MacBeth

    MacBeth Member

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    I've gotta run right now, but will address some of thse questions later, particularly regarding the per 48. In short I would suggest people read the qualifiers I made again...and no way Cato is anything as his scoring, like all per 48 ratios, would stay very low.

    An interesting follow up regarding the presumtion of Yao's effectiveness as it relates to his shot limitation would be to check his % in games in which he shoots more than others...might find the results interesting...
     
  14. New Jack

    New Jack Member

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    I think if Hakeem/Moses/Ralph really wanted to they could have averaged 30 points a game. They just seemed have more control over their own fate. If they were determined to score 40 points one game, they were going to score 40 points. It doesn’t matter what the defense threw at them, they were going to do what they set out to do.

    With Yao, it’s completely the opposite. The defense totally controls how well Yao is going to do. If they decide to single cover him or not front him, then they have decided to let Yao try and beat them by himself. If they decide Yao is not going to shoot any more than 5 shots tonight, that's exactly whats going to happen. It doesn’t matter how determined Yao is or how determine his teammates are at getting him the ball.

    It is totally up to the defensive shcemes teams throw at Yao that decides how well he's going to do.
     
  15. JayZ750

    JayZ750 Member

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    Guys, Macbeth isn't purposely including or ignoring certain aspects of the debate...he is only pointing out what is factualy evident. It is impossible to say, for example, if Yao's current efffectiveness level would continue at the same rate pro rata on a 48 mpg basis. That is speculation.

    Given that we know it is highly unlikely that he would continue to perform at the same effectiveness rate, we can conclude that it is somewhere between where he is and where MacBeth has caclulated, if Yao were to play 48 mpg.

    If it was up to me, I'd say assume he can play 40 mpg, and then assume the extra 10 mpg or so he plays he is only 80% as effective as he currently is. Then, you can additionally assume some sort of increase in shot attempts to mimick what the past centers got, or at least get him closer to a level where Francis has been the past few seasons, and then you may be looking at a number that would be a good comparison of what kind of player Yao actually could be if he got 40 mpg and shot the ball more.
     
  16. Launch Pad

    Launch Pad Member

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    I generally don't like the per 48 min stat either, especially considering that endurance is one of Yao's greatest weaknesses. Of course, there is no easy way to quantify that which is a largely qualitative observation (layman's translation: you'll believe what you see with your own eyes before you believe manipulated numbers).

    Still, if it helps people to view numbers, a good compromise is the per 24 minute stat. Though still far from perfect, the range of spread in the numbers is narrowed to a slightly more probable and comparable range and still helps MacBeth make his argument. Since none of the players play less than 20 minutes per game, this doesn't get schewed as badly as garbage time players that look phenomenal in per 48 minutes. So ...

    Per 24 minutes, Hakeem averaged 14.7 pts, 7.9 rebounds, and 2.0 blocks in his first 2 seasons. He took 11.0 shots ( making 5.8) and 4.9 free throws (3.1) per 24.

    Moses Malone averaged 11.6 pts, 10.2 rebounds, and 1.4 blks. He took 8.5 shots( 4.2) and 4.6 (3.3) free throws.

    Ralph Sampson averaged 14.7 pts, 7.4 rebounds and 1.1 blocks. He took 11.9 shots (6.1) and 3.7 free throws( 2.5).

    Yao Ming has averaged 11.6 pts, 6.8 rebounds, and 1.4 blocks per 48 minutes. He has taken 8.2 shots ( 4.3) and 3.9 (3.1) free throws.

    Of course, most of MacBeth's observations are still apparent in the per 24 minute stat, but the effect size is much smaller.
     
  17. meh

    meh Member

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    While I also agree that "per 48" stats aren't reliable, I also think you're missing some other factors into this comparison.

    1. You need to look at what's the league scoring average for team scoring during the times Hakeem, Moses, and Ralph played. This way, you can get an idea of just how much each point is "worth" relative to the league. After all, if you can score 20 pts when teams only score 80, it's more impressive than scoring 20 pts when teams are scoring 100.

    2. This correlates with the first factor. That is, what percentage of points is Yao putting up relative to the Rockets, relative to his predecessors? Van Gundy runs a ridiculously slow-paced offense. So Yao's points and rebounds should be higher in a higher paced game, where he gets more opportunities to get them.

    3. Take into consideration the fact that Yao's a foreigner. Looking at the non-American stars in the NBA, they all tend to have a fairly long learning curve. None of them, as far as I know, began to dominate until a few years in. This, in contrast with many college players who has dominated from the start.
     
  18. Toast

    Toast Member

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    Yao shoots more when teams don't double him.
     
  19. GATER

    GATER Member

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    MacBeth - Good stuff, thanks.

    My 2 cents...
    48 mpg is an effective measurement to place two disimilar stats into a proportion. You could just as easily take Dreams, or Moses or Ralph's stats/minute and multiply them by the number of minutes Yao plays.

    IMO, most people get so hung up on "but nobody could do that for 48 minutes" that the fail to recognize that it's only a proportionality. Player A puts up 15 points playing 32 mpg. Player B puts up more points...18 ppg, but he does it in 38.5 mpg. Player A is more productive on a per minutes bases and that's what the 48 mpg demonstrates.
     
  20. beyao

    beyao Member

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    another intangible to consider...did any of the aforementioned houston centers join a team with established scorers like Yao did? Was Calvin there before Moses? Although, I suspect Calvin was willing to defer...
     

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