By Jon Nichols

What does it take to win an NBA championship? Every team is trying to do it (or at least
that’s what we assume), but there are many different methods. Some focus on offense and hope their defense plays
tough enough to keep them in games (like Utah). Others start by building a strong defense and
grind every game out (like San Antonio). Some teams go small (like Atlanta)
while others go big (like Los Angeles
this year). Some play fast (like Golden State)
while others play slow (like Detroit). Some acquire veterans (like Boston)
while others accumulate youth (like Portland). You get the idea.

 
 

Kevin Garnett

 

But which is the best way? Obviously any method that makes both
your offense and defense as good as possible is the best method. However, to
see exactly how it’s done, I’m going to analyze the past ten champions (the
post-Bulls era) based on the following factors: offensive/defensive balance,
size, pace, style, and age.

Offensive/Defensive
balance

The champions over the past ten years had an average
offensive rating (points per 100 possessions) rank of 7.3 and a defensive
rating rank of 4.8. However, if you take
out the 2000-01 Lakers, who ranked 21st defensively in the regular
season but played at a much higher level in the postseason, the average
defensive rank was 3. Boston was far and away the best defense in
the league last year. The moral of the
story is that you need to be great on both ends, but champions tend to be among
the best in the league at defense.

Size

I will provide this data with one disclaimer: it’s not perfect.
This data is based on the NBA survey data (http://www.nba.com/news/survey_height_2007.html
), which has a couple of flaws. One, it does not factor how many minutes each
player gets. A seven-footer who never sees any minutes will make a team seem
bigger than it actually plays. Additionally, the data is based on rosters at
the beginning of the season.

Over the past six years (that’s as far back as the survey
goes), the champions have on average ranked 15th in the league in
height. Yes, exactly in the middle. Boston
ranked 19th last season.
Unless there are major problems with the data, being extremely big or
small doesn’t seem to matter as long as you perform well on the court.

Pace

The champions have had an average pace factor (explanation here:
http://www.basketball-reference.com/about/glossary.html#pace)
rank of 17.7, slightly below average. Again, this does not seem to make a huge
difference. Because a lot of these teams have been very good on defense, I assumed
that these teams would generally play a slow, boring game of basketball. But
that is not the case. For the record, Boston
ranked 19th in the league in pace last season.

Style

To determine this, I’m not going to look at “style” as most
people would think of it. Instead, I’m
going to look at the “Four Factors” on both offense and defense. The Four Factors idea was developed by Dean
Oliver. He determined that to be good on
offense, teams needed to have a high effective FG%, a low amount of turnovers,
a lot of offensive rebounds, and a lot of free throw attempts. Holding the other team to the opposite of
those is required for a good defense.
The table below has the average rank of the ten champions in each of the
eight categories (four for offense and four defense):


Offense

Defense

eFG%

7.5

3.5

TOV%

13.6

16.6

ORB%/DRB%

13.7

8.4

FT/FGA

11.2

10.9

On offense, the most important thing appeared to be
converting a high percentage of your shots.
Nothing else was especially important.
On defense, not allowing a high eFG% appears to be the secret to
success. Even the bad defensive team
(the 00-01 Lakers) wasn’t terrible at this.
Getting a high percentage of the defensive rebounds was also somewhat
important. Surprisingly, creating a lot
of turnovers did not seem to be a huge factor at all. This may be because championship teams don’t
gamble and play safer and more solid defense, which would explain the low eFG%
allowed.

Age

I will use the NBA survey data again, and the same flaws
still apply. Also, the 2007-08 data
prefers to use experience instead of age, but I’ll count that as the same.

The champions over the past six years have had an average
rank of 4.5 in terms of being the oldest team.
Boston
was not especially old, ranking 11th in experience. Based on these numbers, it appears that maybe
all those traditional folks who love veterans are on to something.

In conclusion, championship teams are strong on both offense
and defense, with generally more of a focus on defense. They are not especially big or small, and
they don’t have to play at a certain speed.
Winning the field goal percentage battle is crucial for these
teams. Finally, they’re old (or to put
it nicely, experienced).

I must give a lot of credit to
basketball-reference.com. Without its
multitudes of numbers and great accessibility, this article would not have been
possible.

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