Wednesday, March 18th, 2009 at 4:43 pm  |  37 responses

Future Shock

If spreadsheets were scented like sweat socks, we’d want to hang with stat geeks.

by Brett Ballantini

He was found by the Bureau of Statistics to be
one against whom there was no official complaint,
and all the reports on his conduct agree
that, in the modern sense of an old-fashioned word, he was a saint
W.H. Auden, “The Unknown Citizen” (1940)

After contributing consistently here for a couple of months and reading for much longer than that, it seems it’s long since past time to come out of the closet.

The stats closet, that is.

Yeah, the only thing less cool than admitting you’ve just turned 40 on SLAMonline is to pump up the cause of statistical analysis in basketball. Yup yup, pocket protector in the house!

This isn’t prompted as much by reaction to the Michael Lewis piece on Shane Battier in the New York Times Magazine as it is the overall tenor of discussion on SLAMonline when it comes to numbers. It’s a bit odd that there seems to be so much fear of stats, what with all the “eff PER” and +/- chides rife on these pages. Really, are the metrics folks that close to overtaking the games?

We want so desperately to believe our eyes as the first and last evidence needed to inform our opinions and handicap our favorites in the game we so love that the idea of supplementing our own personal game notes with numbers is akin to some sort of betrayal.

Numbers can be jimmied. Every stat, including the final score, is ripe for manipulation, at least by some small measure. But in the end, that final score is the only statistic that matters.

In the game box, there are scads of seemingly unalterable statistics: points, rebounds, assists, steals, and so on. But every one of these numbers are contingent on judgment calls, haphazard timing or good and bad luck. A basket is credited to the player who appeared to score on a tip-in; a rebound can be juggled, tapped or dropped entirely; assists are routinely credited without regard to the spirit of the pass-to-score nature of the rule; and even the most blatant pickpocket earns his steals contingent on team defense.

So the notion that game stats are “pure” while secondary stats like the PERs and Efficiency Ratings and Player Wins of the stats world are somehow tainting the game and altering perceptions is ludicrous. And it makes those who shake angry fists at or shed tiny tears over basketball encyclopedias seem, well, rather short-sighted.

Advanced statistics are a sign of progress when it comes to basketball analysis, not the overmanagement or mangling of it. They are an essential part of the evolution of the game.

Think about it. The year I was born, 1969, the NBA awarded all its statistical titles to cumulative category winners, not for averages. So in ’68-69 Oscar Robertson finished fifth in scoring with 1,955 points rather than fourth, with a 24.7 average. Dave Bing finished fifth in assists with 546 instead of fourth, averaging 7.1. Nate Thurmond finished fifth in rebounding with 1,402, instead of second, averaging 19.7.

You might think this statistical subjectivity is as relevant to today’s NBA as a .400 hitter from the 1890s getting plopped into the major leagues of today. So let’s take a more recent, and relevant, example.

Birdshow doesn't want any of that Clipper mess.Defenses were long measured by points allowed, the lower the PPG, the better. The fact that by this measure a “bad” defensive team could win a whole buncha games 120-115, or a “good” defensive team could lose just as many 90-85, leaves such a simplistic statistical measure of defense in tatters.

These days, defensive field goal percentage has overtaken PPG as the supposed best measure of a defense. And that certainly is a step forward. But still, how directly does a low defensive field goal percentage correlate to a great defense, or wins? If a club is stocked with lousy rebounders, for example, it’s of little consequence how many shots they force opponents to miss; those opponents can launch bricks with impunity, knowing they’ll have two or three or four cracks at a basket every trip down the floor.

Savvy fans have moved on to possession and pace statistics to most accurately judge teams on both sides of the ball. Defensive and offensive ratings even the hardwood for all teams by judging them per 100 possessions. A fast-paced team won’t be penalized for its cheesecloth-appearing D, while a sluggish club won’t be scored poorly for clay feet on offense.

Standardizing statistics in order to measure team efficiency per possession seems about as true to the game as the final score: maximize scoring on your possessions, squelch opponents on theirs.

For the past couple of years I’ve had some interesting exchanges with some veteran (read: older) writers, on the subject of the Denver Nuggets defense. Denver is a tricky team. The franchise still carries a tag of no-defense as a holdover from its ABA days, the run—n-stun Doug Moe Nugs of the 1980s, the thin Rockies air, laissez-faire stars like ’Melo or AI, or a combination of all of this.

Well, I’m not expecting anyone in the SLAM universe to back me, but the Nuggets under George Karl have been anything but a poor defensive team. In this season to date and his three full seasons previous, Denver has never had less than the 13th-best defensive efficiency in the NBA. Chauncey Billups has been heralded, rightfully, for all he has brought to the Mile High, but when it comes down strictly to the team’s efficiency on both sides of the ball, the Nuggets are pretty much identical to a season ago. On offense, they’re up to the 10th-best offensive efficiency (from 11th last year); defensively they are ninth in the League this year (106.4 points surrendered per 100 possessions) and 10th last year (106.3).

Last season one of my colleagues, who would consistently harp on the Nuggets and their propensity to quit on plays and play “horrible” defense, half-mockingly asked me if I actually ever watched Denver play. Heh. But calling Denver a bad defensive team (or, here’s one I love, Marcus Camby an overrated defensive player because he’s more of a weak-side help defender; perhaps if he got down on all fours and growled like Kevin Garnett, Gumby could get a little more love) wasn’t just a disservice to Denver, it simply wasn’t accurate.

Suddenly, because Billups is in town, the team’s pace has slowed to seventh in the League (from first or second in the AI years) and the antiquated points allowed per game from 107 to 100.1), and Denver has a great defense. Please.

All right, one more example before I go, so let’s look into the eye-popping world of standardized stats, an innovation fathered by Michael Goodman and beginning to gain some true traction among savvy fans. A great recent example of the power of standardized stats is in Neil Paine’s astounding column on Justin Kubatko’s Basketball-Reference, which has literally changed the way we’ve seen the game since the site’s inception five years ago. Paine suggests that Oscar Robertson’s magical triple-double season of ’61-62 (as well as Wilt Chamberlain’s preposterous 50.4 points and 26 rebounds per) was heavily influenced by the pace of play in the game of 47 years ago. Back then, teams Big O at the 1961 All-Star Gameaveraged almost 125 possessions per game; today, teams get 92.

You think a lotta tasty numbers might get gobbled up in the process of losing 33 possessions per game?

Big O is one of my favorite all-time players, and interviews. He’s dead honest about the game, with just enough cranky old-schooler sprinkled in to be a delicious quote any time, on any subject. And when Big O grouses about “giveaway” assists these days, that the assists of his day were “true” assists, no one bats an eye; hey, he’s Big O—and he’s right. But if you suggest that at the pace of today’s league, Robertson’s 30.8 points-12.5 boards-11.4 assists would be downgraded to 22-8.9-8.1, and you’re sure as hell going to serve some detention with David Stern.

Naturally, we can’t just slap a new coefficient on a season and say, boom, here are the “real” stats and, roasted, here’s your new digits, O. There are a lot of other things to take into account (not the least of which: How the hell did those fellas sprint and pound their way through possession after possession on loose floorboards strapped into Chuck Ts and not die of shin splints and related maladies?) so no one should suggest taking an eraser to the record book.

The illuminating aspect of Paine’s piece may be what it sheds light on from today’s game. The NBA’s newest triple-double troublemaker, LeBron James, would be rocking 40.1 points, 10.3 rebounds, and 10 assists if his molasses Cavs were playing at a ’61-62 pace.

Point is, there is revelatory research going on all around us today. Pioneering possession-stats researcher (and author of the amazing Basketball on Paper) Dean Oliver works now for the Nuggets. Kubatko reinvents his site, and the way we see stats, every day, with his four factors and acknowledgement of “advanced” Fourty per if he was playing in the 60s?statistics like PER and win shares. John Hollinger at the omnipresent Big E has developed and evolved his all-encompassing Player Efficiency Rating, and you can eff it all you want, but when it comes to player prognostication, there’s not a better and more entertaining writer in the business. Goodman created EWins and has pioneered research in standardizing numbers to better understand how individual players contribute to team wins. Interesting debates and discussions go on every day at APBRmetrics (“the statistical revolution will not be televised”). And, oh yeah, basketball metrician Daryl Morey is the GM of the Houston Rockets.

There are several sites beyond B-R and APBRmetrics that will revolutionize the way you think about basketball, from 82games.com to Knickerblogger.net, and so many others. These sites and statisticians have forged a statistical renaissance that been long overdue in basketball. The movement has changed the game forever, and for the better.

The anti-stat sect wants to penalize stats that seem to minimize or skew the game, while leaving unacknowledged all the dumpster-ready “traditional” stats that can skew perceptions. You can’t have it both ways. If you pick and choose which stats to believe in, whether or not they’ve made it onto the back of your basketball cards, you’re…gulp…manipulating the game just the same.

  • Add a Comment
  • Share
  • RSS

Tags: , , , , , , , , , , , ,

  • http://slamonline.com/ Ryne Nelson

    Brett, you really hit the stat-o-phobia on the head. There are a few “dumpster-ready” stats that people use all the time still just because they’re easier to wrap your head around. For instance, do you think the average junior high fan would understand the necessity to compare points per 100 possessions as opposed to PPG?
    I too, would like to see how teams *averaged* 125 possessions per back in the ’60s. The Warriors lead the L in possessions per game at 98!

  • http://slamonline.com/ Ryne Nelson

    That said, there never will be a formula that can say how valuable a player is. I don’t believe that certain stats or manipulation thereof can be used to compare players. That’s where I think a lot of people get caught up — people are trying to make conclusions about who’s better solely based on number formulas. You can’t do that.

  • http://www.slamonline.com Justin Walsh

    Brett, love the breakdown. I come down on the side of PER and +/- that thinks it’s an overhyped stat. For literally the best 4-5 players in the league on the best teams, it’s a fine stat. But after that there are too many exceptions for me to ignore. But you bring a compelling argument that I have to take heed to, at least in part.

  • http://www.slamonline.com Ryan Jones

    I think Brett wants to fight me. Bring it, old man!

  • http://www.slamonline.com Ryan Jones

    (Note: The commenter is 35 years old.)

  • http://www.slamonline.com Ryan Jones

    “people are trying to make conclusions about who’s better solely based on number formulas. You can’t do that.”
    As much as I hate to agree with an UI alum (whose 5th-seeded team my team beat TWICE this season), I do believe Mr. Nelson pretty much nails this one.

  • http://www.slamonline.com Ryan Jones

    Nerds.

  • http://www.slamonline.com Justin Walsh

    Ryan Jones, PSU is going all the way in the NIT. or just to spite your heart…they’ll bow out in the first round

  • http://www.manutd.com Z

    What’s funny to me is that one ‘conventional’ stat gets disregarded by a lot of dudes. FG%, especially for perimeter players. That has always been my beef with AI. His scoring is rarely efficient. Yes, he’s a prolific scorer but is that helping his team win games?

  • http://www.remembertheaba.com Brett Ballantini

    Farmer Jones is looking for a cotton-pickin’ throwdown? Man, I knew it was a bad idea to write about numbers. And now the whole thing has degenerated into a Big Ten pissing match. Ugh.

  • http://ittakesanationofmillionstoholdthissac.blogspot.com ciolkstar

    +/- and PER are fine as peripheral stats, and I think a lot of the pace-adjusted stuff can be helpful but its all a bit reductionlist for my taste. I mean when the pace changes the shots/plays themselves change and likely, so would the outcomes. I think there’s a place in the game (or, more accurately, in the culture of the game) for ALL of these new metrics, but I just worry when I see pieces like the Times one on Morey and Battier that claims to prove that some players have a “magical” ability to help teams win, just because of the way they close on shooters and whatnot. PER does however, provide some predictive qualities that are helpful for preparing for fantasy basketball drafts, like i remeber reading about the super productivity in low minutes by guys like Millsap and David Lee, but you’ve got atleast as many Amir Johnson’s. The game is still an art form to me, and meant to be watched, not completely reduced to statistical analysis, which itself is rife with assumptions about bell curve “normal” distributions and standard deviations. An educated fan can tell the difference between an efficient, or “winning”, team player, and one who just goes for dolo. These new stats aren’t going anywhere, but neither are the arguments.

  • Pingback: SLAM ONLINE |

  • tenorca

    This was a great piece, regardless of whether you’re a stathead or not. The big problem I see with traditional statistics in basketball is actually what Lewis was talking about in the Battier piece—how players like Battier, Turiaf, Najera, and Varajao are consistently undervalued by fans. Their box scores look limp and they’re dismissed offhand as “annoyers” and “hustle guys.” But I’ve seen each of those players turn games by himself. If I ever see a stat that can fully account for the greatness of players most fans see as middling scrubs, I’m signing up for that.

  • http://ittakesanationofmillionstoholdthissac.blogspot.com ciolkstar

    The thing is, no (legitimate) stat will be able to quantify that stuff. Not that it isn’t valuable, but I don’t think attaching a number to everything (hustle quotient?) is a necessary pursuit.

  • http://ittakesanationofmillionstoholdthissac.blogspot.com ciolkstar

    Also, announcers are almsot universally uninfomed.

  • tenorca

    Bob Fitzgerald and Jim Barnett are insulted.
    But you’re right ciolkstar. There are things in basketball that cannot ever be numericalized (not a word, I’m aware). It’s like trying to write a good song by analyzing the hooks for amounts of words per measure and beats per minute: it’s fruitless. I applaud people for trying, honestly, but it can only go so far. You can’t measure how good a crossover is or a guy’s vision as a play unfolds.

  • scott

    LeBron James has better stats then Kobe Bryant.

  • Jackie Moon

    Great column, Brett. CHECK OUT THE BRAIN ON BRETT! I don’t think there is a fear or phobia of the “new” stats, as you suggest, it’s a fear that their interpretation will not be valid or just flat out wrong. I’m glad you pointed out that game stats are pretty stinky, but then you ignore that many of the “new” stats are based on those same game stats. I’m actually all for the team statistical analysis, because that’s the end result of all the cogs in motion working to win the game. But when you get into individual stats, and assigning things like “Wins Produced” and “PER”, I have to put the SLOW sign up toward the oncoming traffic. Trying to split out individual stats is like trying to take out the individual ingredients of a piece of chewing gum. You present that argument yourself when you write about the supposedly “pure” game stats. When you score a point, when you get a rebound, when you get a steal, when you block a shot, when you get an assist, it takes five, as Adidas so famously proclaimed. Ok, not always five, but most of the time you can spread the credit to at least two teammates interacting on a play. So for me, the current individual stats are bunko, until they can create better tools to separate the sticky mess, beginning with assigning correct credit to any “pure” stat. But then that opens a whole Panda’s box of bamboo, because that is a highly subjective matter to say when player X player scored, 25% of it was because of teammate’s Y non-assisting, yet timely pass, 10% because teammate Z spaced the floor correctly, 5% because teammate A drew away the help defender, and 60% was because of the sweet shot of player X. I hope that adds up to 100%. Also, I refuse to believe any statistical model that does not show Kobe Bryant as the best player in human history. I look forward to your next piece.

  • truthteller

    Scott,
    “Lebron has better stats than Kobe.” And Kobe has more rings than LeBron.

  • truthteller

    here’s some more stats for you: Kobe 3 championships, Lebron: 0 Championships.

  • http://joeloholic.wordpress.com Joel O’s

    I say stick to the basic stats. It’s the same with basketball as it is with corporate finance. Get too mixed up with complex derivatives that nobody understands and you run into trouble. I’m not a fan of +/- at all, but PER definitely has its merits. That said, it is impossible to fully capture basketball quantitatively ALONE, in the same way technical analysis falls flat by itself.

  • Jackie Moon

    @JoelO – I think I understand them, I just don’t believe that they capture an individual’s contributions to the team. @ciolkstar – PER works for fantasy leagues bc they both work on the same premise – that individual game stats determine value.

  • http://www.triplejunearthed.com/dacre Dacre

    For the record ‘I Love Stats’. My dream was not to one day play in the NBA, it was to sit court side and take stats down in the NBA… I wanted to set up a business called STATmonger and I was going to revolutionise sporting statistics…. thats what i was gunna do.

  • http://fdklf.com Jukai

    How many points who Kobe’s 35 points a game two seasons ago have actually been if he played in 61-62? Over nine thousand?

  • Teddy-the-Bear

    I’d say Big O averaging a triple double was a pretty landmark STATLINE in cementing his future as perhaps the NBA’s best point guard ever.
    Stats do matter… Just not all the time.

  • Teddy-the-Bear

    @ Z: AI carried his team to the finals while leading the league in scoring (I think). “Does it help his team win ball games?”
    What more proof do you need?!

  • Jackie Moon

    Teddy: I think Z would like AI’s PER, TS% and Wins Produced to have been higher, as well as his on-base percentage.

  • http://www.slamonline.com Ryan Jones

    Brett:
    I believe that, in referencing the conference’s basketball games, using the phrases “Big Ten” and “pissing match” is technically redundant. Let’s not make that mistake again.
    Farmer

  • http://slamonline.com Ben Osborne

    Thanks for the thoughtful column, Brett.

  • ka

    neeeeeeeeeeeeeeeeeerds

  • baron samedi

    my god! all this plus/minus crap is really pissing me off, mainly cos i dont get it!

  • ka

    LOL at jackie doing pulp fiction. not a big fan of stats crunching but appreciate pers as a way of looking at unheralded but productive players. also, nerds.

  • Rome

    How many points would Kobe have scored against toronto in the 81 point game but at a 1960′s pace, keeping a three point line? 115? 120?

  • Rome

    Me and my friends in here in detroit are suckers for b-ball stats arguments?

    Here’s another one, how much would Jordan (may my spit be upon him) have avg. on a 1960′s pace the year he scored 37 ppg, what 50-12-12?

  • matt the jazz fan

    my two cents – fast breaks come, often, after four or five posessions, when one of the five players doesn’t sprint back on defense. And often times a fast break is followed by one on the other end (especially if the layup / shot is missed)
    BUUUUT as there are so many game breaks, TV timeouts etc… there are fewer opportunities for people to get winded… and after one roof-raising fast break dunk, the opposing coach calls timeout so no chance for rhythm.

    BTW obviously this is all statistically unsubstaiated, just a gut feeling. But is anyone with me?

  • http://mindyourbusiness@getalife.com Allenp

    Stats are ok.
    But, let’s take the Nuggets with AI. If you watched the games, it was obvious that no matter what the stats said, that team was not scoring or defending efficiently. The way they got their points and their stops was haphazard. They were not a consistent team.
    Plus, considering that team’s potential, they greatly underperformed, which I think influenced people’s opinion of how good they were on defense.
    Good, poor, bad, excellent are all relative terms that depend on context.

  • http://www.pistonscast.com John W. Davis

    wow this is deep! Where did you get your background from?

    I really like this article.

Advertisement