The Fairness of the NBA Draft Lottery

Posted on June 9, 2008 by

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Dictionary.com provides the following definition of the word “fair”:

free from bias, dishonesty, or injustice

When I talk to my students about what is “fair”, I note that people often define bias and injustice – or impartial and justice – in terms of their personal viewpoint.  A transaction is often perceived as “fair” if people perceive they came out ahead on the deal.  If not, then the deal is “unfair.” 

For example, if free trade results in your job being taken away, trade is “unfair.”  But if barriers to trade mean you keep your job – even though everyone else pays higher prices – then barriers to trade are “fair”.  Again, the meaning of “fair” depends on your point of view. 

And that observation brings us to the NBA lottery.  The Chicago Bulls were not the worst team in the NBA in 2007-08.  In fact, they should have been one of the best (a story I will get to sometime this summer).  Nevertheless, they are picking first in the 2008 NBA draft.

For many fans of the Miami Heat, Seattle (or Oklahoma City) Sonics, Memphis Grizzlies, Minnesota Timberwolves, etc…, this seem “unfair.”  Their teams were clearly worse than the Bulls and therefore are more “deserving” of the first pick.

A few weeks ago I was asked about this by Ethan Skolnik, a writer for the South Florida Sun-Sentinel.  If I remember correctly (I was being interviewed, so it’s not like I was the one taking notes), the interview went something like this.

Thoughts on the NBA Draft Lottery Off the Top of My Head

I was sitting in my office thinking important thoughts (and/or surfing the Internet). The phone rang and Skolnik asked if I had time for a few questions.  Given what I was doing (apparently not much), I agreed.

I think I have noted in the past that interviews are like taking a test.  Except you really don’t have a chance to study, you really don’t know what the questions are ahead of time, and your answers – no matter how silly – are going to be made public. Despite these conditions, interviews are still kind of fun (at least, I have found most reporters make interviews fun). 

Skolnik’s questions focused on the nature of the NBA lottery.  Although I don’t recall the exact questions, I do remember that he was asking about why the NBA has a lottery and whether or not it is “fair” that the Heat – the NBA’s worst team – is not guaranteed the first pick in the NBA draft.

For the first part of the question I referred to the work of Beck Taylor and Justin Trogdon (more on that in a moment).  The fairness question, though, I tried to answer.  And Skolnik’s article — NBA lottery: Where math, cheating, hoops meet — noted my responses.

And, so what do you say to Heat fans, if they fail to win the lottery after 67 losses? According to David J. Berri, the same thing you could have said to Grizzlies fans, who watched the seventh-worst team (Portland) earn the right to draft Greg Oden in 2007, while the worst-in-NBA Grizzlies slipped to fourth. And the same thing you could have said to Blazers fans the year before, when their team slipped from the first lottery seed to the fourth spot, as the fifth-worst team (Toronto) ascended to the top spot:

Tough luck.

“I don’t know how you deserve the No. 1 pick if you are the worst team,” said Berri, an associate professor at Cal-State Bakersfield and a co-author of The Wages of Wins. “To say, ‘I deserve the top pick, because I was more incompetent than anyone else.’ What kind of argument is this? You are not owed something here. You made bad decisions. You get what you get.”

Berri notes that, if the Heat played in Europe, it might get something worse than the fourth overall selection.

It might get demoted.

“It’s a quandary unique to North American sports,” Berri said. “In Europe, they don’t have this problem, because if the Heat was in Europe, it would be playing in the National Basketball Developmental League. They would have promoted some other team from the second division.” As in European soccer.

“Then Miami wouldn’t be doing that anymore,” Berri said, of possibly creating conditions to lose on purpose. “The revenue loss would have been so huge, Miami would have been trying to win every single game. In U.S., the teams are fixed, they know they’re fixed, know they’re not going anywhere. In Europe, they don’t have any draft, they can sign whoever they want to sign.”

The Better Part of the Article

The Skolnik article does more report my harsh words for the NBA’s losers.  The more important part of the article is the review of the aforementioned work of Taylor and Trogdon. As note in The Wages of Wins, the research of Taylor and Trogdon reported evidence that NBA teams were indeed trying to lose to win a better position in the NBA draft lottery.  Skolnik managed to interview both Taylor and Trogdon — who I think I met at the Western Social Science Association several years ago when I was the discussant of the NBA lottery paper (at least, I think I was the discussant on this specific paper).

Now I find the research of Taylor and Trogdon to be quite convincing (and very interesting).  But in my experience, people don’t always believe academics.  Fortunately, Skolnik also interviewed Pat Williams (vice-president of the Orlando Magic).   Here is some of what Williams had to say about NBA teams tanking:

The NBA established its lottery in 1985, largely in response to the Houston Rockets.

“Houston literally dumped the entire last 20 games or so,” Williams said. “In those days … nobody was following it. But they just died.”

Later in the article Williams offers more:

 “But long story short, they do not want teams cutting corners down the stretch to get a better pick. I think they’ve got it tweaked about as well they can tweak it. You’ve got to keep the integrity of the regular season and avoid that temptation to get a better pick. We are not mature enough, so the league office has to do it.”

So there you have it.  An NBA executive has explained why the lottery is necessary.  Teams in basketball will make an effort to lose to secure a better draft choice.  Consequently, the NBA had to devise a system where the incentive to lose was reduced.

I would encourage everyone to read the entire Skolnik piece.  As noted, Skolnik interviewed both Taylor and Trodgon , and their insights into the NBA draft lottery are quite interesting.  In addition, there is an interesting quote from the increasingly famous Justin Wolfers at the very end. 

– DJ

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Our research on the NBA was summarized HERE.

The Technical Notes at wagesofwins.com provides substantially more information on the published research behind Wins Produced and Win Score

Wins Produced, Win Score, and PAWSmin are also discussed in the following posts:

Simple Models of Player Performance

Wins Produced vs. Win Score

What Wins Produced Says and What It Does Not Say

Introducing PAWSmin — and a Defense of Box Score Statistics

Finally, A Guide to Evaluating Models contains useful hints on how to interpret and evaluate statistical models.