Archives for basketball



For N.B.A. Hopefuls, Zip Code Matters

We’ve blogged before about the (relatively small) effect of birth month on athletic excellence.  But how does birth location affect a potential athlete? In The New York TimesSeth Stephens-Davidowitz  calculated the probability of getting to the N.B.A. by Zip codeHe found that players like LeBron James, born to a low-income teenage mom, are the exceptions to the rule:

I recently calculated the probability of reaching the N.B.A., by race, in every county in the United States. I got data on births from the Centers for Disease Control and Prevention; data on basketball players from basketball-reference.com; and per capita income from the census. The results? Growing up in a wealthier neighborhood is a major, positive predictor of reaching the N.B.A. for both black and white men. Is this driven by sons of N.B.A. players like the Warriors’ brilliant Stephen Curry? Nope. Take them out and the result is similar.

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Losing Is Not a Winning Strategy in the NBA

The NBA season is beginning this week and fans of each team are, of course, optimistic. At this point, everyone can hope a title is possible come next summer. 

Although everyone could theoretically have dreams of a title in 2014, it is clear that every NBA fan isn’t actually hoping their team is successful in 2014. Some NBA fans are actually dreaming of an event that happens just after the conclusion of the NBA Finals.  For fans of a few teams, the focus is already on the 2014 draft.  For example, some fans of the Philadelphia 76ers seem convinced that not only are the Sixers not trying to win this year, but that this is actually the best course of action for this franchise.

Proponents of “tanking” dream of such number one picks as Shaquille O’Neal or LeBron James. Each of these players were selected number one and went on to win multiple NBA titles.  Of course, other number one picks – like Yao Ming, Michael Olowokandi, Allen Iverson, Joe Smith, Glenn Robinson, Chris Webber, Larry Johnson, etc. –  played their entire careers and never won an NBA title. Read More »



A Former NBA Coach Argues That Coaches Are Not Responsible for Outcomes

The coaching carousel continues to spin in the NBA.  In recent days, the Los Angeles Clippers – coming off the best season in franchise history – have decided not to bring back Vinny Del Negro as head coach.  The Phoenix Suns — coming off their worst season since they were in expansion team in the late 1960s – have decided to turn to Jeff Hornacek to lead their team back to respectability.   And the Atlanta Hawks – who were essentially average this last season – have turned to Mike Budenholzer to lead the team next year.

These are hardly the only teams to make a change.  Since the end of the 2012-13 NBA season, the Brooklyn Nets, Charlotte Bobcats, Cleveland Cavaliers, Detroit Pistons, Milwaukee Bucks, and Philadelphia 76ers have all decided that the person who coached the team at the end of this past season shouldn’t be around for the next season. In all, at least nine of the 30 NBA teams will have a new coach next year. 

These changes – as I have argued before –will probably not make much difference.   A study published in the International Journal of Sport Finance (full PDF here) – which I conducted with Mike Leeds, Eva Marikova Leeds, and Mike Mondello – found that most NBA coaches across a sample covering 30 years did not have a statistically significant impact on player productivity. And in other sports, we also have evidence that coaches cannot systematically change outcomes. Read More »



Seattle Is Frustrated By the NBA’s Command Economy

For 41 years, the city of Seattle enjoyed NBA basketball.  And then the Sonics moved to Oklahoma City and became the Thunder.

Across the past year, though, there was hope that the NBA was returning to the Emerald City.  Sure the team was the Kings, a team that has lost at least 65 percent of their regular season games in each of the past five seasons. But if the Kings came to Seattle, other NBA teams would have to come as well (hey, the Kings-SuperSonics have to play someone).  And since the prospective owners (a group led by Chris Hansen) of the “Seattle Kings-Supersonics” offered a purchase price equivalent to an enterprise value of $625 million – more than anyone else (and more than anyone has ever offered for an NBA team) – it seemed likely that in a market economy (where the highest bidder tends to get the product) that the NBA was coming back to Seattle.

Unfortunately, Seattle learned this past week that the NBA doesn’t quite follow the rules of a market economy.  For Seattle to get the Kings, the other 29 owners had to approve the deal.  And when the dust settled, a majority of those owners thought an inferior bid from another group that wanted to keep the team in Sacramento was preferred.  Consequently, Seattle has been frustrated again. Read More »



What’s a Wall Street Executive’s Wins Produced?

LeBron James was recently given his 4th Most Valuable Player award by 120 sportswriters.  Well, at least 119 sportswriters agreed LeBron was MVP.  Gary Washburn – of the Boston Globethought Carmelo Anthony was the league’s MVP in 2012-13.

It doesn’t take much effort to establish that LeBron was more valuable than Melo.  The numbers tell us (numbers taken from theNBAGeek.com) that LeBron in 2012-13 was a much more efficient scorer from the field; and a better rebounder, passer, and shot blocker.   LeBron was also better with respect to steals and personal fouls.  Yes, Melo scored more.  But that is just because Melo took many more shots than LeBron.  Unfortunately, people tend to think that players who take many shots have a huge impact on outcomes in basketball (consequently, players have an incentive to take as many shots as their coaches and teammates will allow).

Although no other sportswriter shared Washburn’s view that Melo was MVP, 102 of the 120 voters thought Anthony was one of the five most valuable players in the league.  So Washburn was not alone in his belief that Anthony is a “great” player.   Read More »



How to Fix College Coaching?

Rutgers University fired Mike Rice – the head basketball coach – last Wednesday. This firing came about after ESPN released a video that showed Rice abusing his players. Such a video had already been seen by Rice’s boss at Rutgers in November, but until the video was shown to the public, Rutgers did not feel compelled to fire Rice.

Former NBA player Paul Shirley (author of Can I Keep My Jersey?) observed the following about the Rutgers case in a recent interview at HuffPost Live (around 13:30):

The thing that people don’t want to hear, but which is true, is that this is probably closer to the norm than not. 

Shirley goes on to note that he doesn’t think many coaches are actually hitting players. But he does note that coaches do tend to have a certain approach in conveying information to players (an approach Shirley describes in the interview).

Is this general approach to coaching effective?  To date, I am not aware of any study of the effectiveness of college coaching.  A study I co-authored with Mike Leeds, Eva Marikova Leeds, and Mike Mondello and published in the International Journal of Sport Finance (full PDF here) looked at 62 NBA coaches across thirty years of data. Across this sample, only 14 coaches were found to have a statistically significant and positive impact on player performance. So most NBA coaches do not appear to make their players more productive. Read More »



How Did the Worst Team in NBA History Become a Title Contender?

Kobe Bryant says that “other team” in LA – the Clippers – are title contenders in 2013.

And Kobe made this statement before the Clippers defeated the Lakers on Friday night and then destroyed the Golden State Warriors (who are currently a playoff contender in the West) the next night. 

Yes, the 27-8 Clippers look like contenders. 

Of course, fans in LA can easily remember the last time this happened. That was back in …

Okay, this has never happened.

Unlike every other big market team in North America, the Clippers have never, ever, ever been a title contender.  In fact, the very best season in franchise history was last season.  When the 2011-12 regular season ended, the Clippers had a mark of 40-26.  This mark was surpassed by seven other teams (including Kobe’s Lakers).  In the post-season, the Clippers reached the Western Conference semi-finals — where they were swept by the San Antonio Spurs.  

Such a season likely left many NBA observers thinking the Clippers were a “good” team, but hardly a real title contender.  Again, though, this was the best team in the history of the Clippers.  For the first time in franchise history (which began in Buffalo in 1970-71), the Clippers won 60% of their games. 

In 2012-13 the Clippers have moved beyond being the best team in franchise history to being one of the very best teams in the NBA.  After 35 games, the Clippers have a 0.771 winning percentage; a mark that – as of Tuesday morning – currently leads the NBA.

Clearly the Clippers are better than they were last year.  And that leads one to wonder… how did this worst team in NBA history become a title contender? Read More »



The Oklahoma City Thunder Stumble While Following the Oklahoma City Thunder Plan

Much has been made of the plan the Oklahoma City Thunder followed in building a title contender.  Here are the basic steps the Thunder supposedly followed:

1.Lose a bunch of games across a few seasons, which allows a team to accumulate lottery picks
2. Draft “stars” with lottery picks
3. Sign “stars” to long-term contracts
4. Win a title (or more)

The Thunder did well with step one.  Starting with their last two seasons in Seattle in 2006-07, this franchise had three seasons where it won 31 games, 20 games, and 23 games. 

These performances primarily led to the following four high picks in the draft: Read More »