Ok, some food for thought:
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Correct me if you think I'm wrong, but you're playing a kind of shell game here. You're comparing Maggette's offensive efficiency not with Posey's, but with the team when Posey is playing (which is higher than Posey's efficiency). It seems to make sense, but when you combine it with your next post on the subject:
"Well, I didn't make any kind of analysis between Posey and Maggette. Here's some more raw data to thing about: What was the improvement of GPA eFG% after moving from their previous lousy teams (well, Pierce didn't actually move, but you get the idea) to the best team in the NBA:
Pierce
06/07 - .502
07/08 - .529
Garnett
06/07 - .480
07/08 - .539
Allen
06/07 - .509
07/08 - .532
Will Maggette's efficiency raise? I'm quiet sure it will - even though he's going to be in a different situation that the 3 previous players. But that's not the issue here. The issue is: how much Maggette's higher efficiency will help the Celtics improving their team offensive efficiency? From whom will Maggette get his possessions? He won't get them from Garnett, Perkins, Powe and Rondo, I can assure you. He'll get them primarily from Pierce, Posey and, to less extent Ray Allen."
A few things jump out from this paragraph: A) that you'd expect Maggette's efficiency to increase, and B) that he'll get his shots from Pierce, Posey and, to less extent Ray Allen. Last year Maggette was about as efficent as Posey the year before he joined the Celts and a little more efficient that Paul or Ray were in 06-07. So getting him shots would likely make us slightly more efficient. Also, while Maggette is more efficient offensively at sf than sg, he seems to be better defensively at sg than at sf (in fact, his numbers before this year weren't that bad on the defensive side).
Again, feel free to point out any mistakes or incorrect assumptions that you think I'm making.
Fair points to bring up.
You're comparing Maggette's offensive efficiency not with Posey's, but with the team when Posey is playing (which is higher than Posey's efficiency). It seems to make senseIt makes perfect sense as a starting point. Also, I'm comparing Maggette's off. eff. when he played under certain and well-defined assumptions - as a short-cut to the role he'd be playing in Boston, as defined by BC. I used this to show that it wasn't that obvious that playing that role, assuming he'd keep the eff. rates he historically had while playing that role, Maggette would help to improve our off. eff.
that you'd expect Maggette's efficiency to increase,Yeps, but I inserted a caveat there and still left a few others to use later. Again, the important is not if Maggette's off. eff. will raise but what will happen to the Celtics' off. eff.
Last year Maggette was about as efficent as Posey the year before he joined the Celts and a little more efficient that Paul or Ray were in 06-07. So getting him shots would likely make us slightly more efficientI'll have to disagree here. That's why I said that Maggette would be in a different situation than GPA.
For starters, I compared Maggette's stats from certain seasons, and not for the last one, because his role would be very different in Boston. And in all fairness, I have serious doubts that the premise is correct (Maggette's usage % was always above or nearly 25% in all those years, while last season Posey usg% was 13.5% - also, Maggette had a >20% usage rate every season since he joined the league, including his rookie year; last year Pierce's was 24.8%, Garnett 25.5% and, very significantly, Ray's was 21.6% down from 29.5% in his last year in Seattle).
Doppo, and as it's backed by the stats, during his career Maggette was always a strongside player. Taking his opponent of the dribble, with or without screens, or rolling in the post, and jumping into people in the paint to draw fouls is a big part of his game. I'm pretty sure that nobody will argue that Maggette is a good offensive player off the ball because we've never seen him filling that role consistently. But that's what he's going to be required to be in Boston. Somebody has to fill that role (and we are strictly speaking about offense here).
An offense is not only about scoring. It's a large part of it, but if you have 5 players whose primary skill is scoring, there's a high chance you won't score much, unless they are all very good all-around players. You need guys to set screens - is Maggette a better screener than Posey?; you need players to fake cuts - is Maggette better?; you need facilitators, distributors, who can play safe; you need fixers and creatives; you need guys that provide space. Posey being a better spot-up 3pt jumper than Maggette when his shot is not contested (I don't know for sure if he is, we don't have that kind of advanced stats available), even though the later is better in anything else scoring related, may be enough to make our overall offense worse, as odd as this may seem. But meshing and balance are the secrets for a potent offense, not outstanding scorers, in spite of how efficient they may be.
I understand, from my readings here, that many are assuming that Maggette can be as effective as a scorer despite of playing in a different offensive role, but I see that as a leap. The problem is not only Maggette taking shots from Pierce and Posey, or even Ray Allen. It's the kind of shots, what he and Pierce or Ray (as the three of them can't play together) will have to do while off the ball, and last, but not least, it's not having many plays prepared and called for him. And Maggette is a good player, but he's not Ray Allen or Paul Pierce; so what's the point of making our worst wing scorer the primary on-the-ball offensive winger?
I think it's consensual that our off. eff. would improve with Maggette, and not Posey, coming off the bench to replace Pierce, with the other starters on the floor. But how many minutes you want Pierce benched during the playoffs? Seven, eight? Other than that (and again, one would be hurting the D, it would be strictly an offensive improvement), I really don't know - Pierce's role is the only one that clearly fits Maggette. I'm still to figure out what kind of rotations we could use. He's not a PG, he's not a post player. I don't know if Maggette-Pierce facilitates our offense more than Posey-Pierce, and this tandem creates huge problems defensively - do you really want to see one of them fighting screens to chase Rip around the floor or trying to stop Wade on the perimeter? I mean, I can imagine plays, one could run 2-2s with them, but then you'd need shooters, so Rondo's backup presence would be required; Pierce can play in the weakside, but IMO, that would be a total waste - it would be like Phil using Kobe as the 1 in the triangle... And we can't play any of them at the 4 for extended minutes because none can defend the post and we'd need to change our all game philosophy (increase the tempo, Garnett as a center, another defensive system, a 4 out 1 in offense - probably it would be a "doughnut offense", considering Garnett's tendency to play outside).
If people really believe that Maggette's offense would make up for what we'd lose on defense, I'd like to see some more substantial arguments. The fact that he is a scorer and a good player is not enough for me. The idea that if a player is effective doing much, therefore he must be effective doing less is a total misconception: Dantley and Iverson are two names that come to mind. The Payton-Fisher example previously used is also relevant, because it shows the importance of the offensive system: sometimes you prefer to play the worse player because he has better skills for a specific role.
Also, while Maggette is more efficient offensively at sf than sg, he seems to be better defensively at sg than at sf (in fact, his numbers before this year weren't that bad on the defensive side).Well, this sentence of yours is probably stats based. When I said that Maggette couldn't guard SGs, I based myself in my naked eye observations. I wouldn't give much attention to his SG stats - he hasn't played there for a long time, Dunleavy never liked to play him at the 2 and I fully agree with him. He only played him as SG for very brief stints, against good matchups (hence his better def. numbers, I'd say). And I can't see Maggette being effective in the offense against most SGs, unless the team helps him (very feasible, of course).
The same goes for my observations on his defense. I mean, I was never worried in understanding the exact reasons causing Maggette's defensive problems, but even not scouting a particular player, one can grasp how good or bad he is defensively in a couple of games, let alone dozens during years. If it's due to lack of effort, mental weakness, physical limitations or lack of individual skills, I don't know; but he's been consistently a bad defender. I mean, if you want to use stats, see how Clippers' defensive efficiency was consistently worse when he was on court during the last 5 years (with a single exception, 05-06, when he barely played). Also, remember he's been playing along good defensive swingmen, especially Ross, who generally guard the opponent's best player.