See link to the right

Only have time for a brief post today about the Cavs game last night, vs the Trailblazers.

The Cavs came back to win in the 4th quarter, and the AP reports name LeBron as the deciding factor.

Well, in this case they're right. LeBron was a beast. But Zydrunas Ilgauskas had a big game, too. He didn't shoot very well, but more than made up for it in possession factors (13 boards, 2 steals and a block).

The WP48 for these two:

LeBron: .417
Z: .228

And just for the heck of it, Larry Hughes:

Larry: -.363

Yep, Larry's production virtually negated all of Ilgauskas'. Hughes played 10 less minutes than Z, so the actual amount of negative wins probably (ie the amount that Hughes HURT the Cavs' chances to win) was very close to Z's total contribution.

As the title of this post says, please visit the Larry Hughes fansite located in the links section to the right. Jesus.

On Possession

Possession is an important, and overlooked, aspect of most sports. Maintaining possession in soccer is fundamental. American football coaches extol the virtues of quarterbacks who don't turn the ball over.

Basketball is no different - possessions, and what a team does with them, are important. Think about it: the only guaranteed way for a team to receive possession of the ball is if the other team makes a basket or commits an unforced turnover. A basketball team cannot expect other teams to consistently turn over the ball of their own accord, and a team is not going to win many games if they only receive possession because of opponents' made shots.

Since basketball is a possession game, the other ways teams can gain additional possessions are extremely important. Rebounds are one way. Steals are another. Blocks can lead to possessions, but are not guaranteed to (and so are somewhat less valuable than rebounds and steals).

It may seem like rebounds and steals are things that 'just happen' in NBA games, but they're not - some players consistently average more rebounds, steals, blocks and turnovers than others, regardless of what team they're on or who their teammates are. "And that," in the words of Champ Kind, "is a scientific fact."

A team CANNOT score points unless they have opportunities to shoot the ball. Therefore, a fantastic (ie: efficient) shooter who does very little else to gain possessions (like Jason Kopono) is completely reliant on his teammates to gain more possessions so that he can shoot. And if a team can employ a similarly efficient shooter, but one who also is also productive in terms of gaining possessions, that team will benefit.

Overvaluing shooters and scorers in basketball is the equivalent of overvaluing a quarterback in football. Fans tend to blame QBs for losses and credit them for wins. Yes, QBs touch the ball on every single offensive play (which is still only half the plays in a game), so they certainly do contribute a lot to a team's fortunes. But no QB has ever won or lost a game on his own.

In basketball, no shooter - like Kobe Bryant - has ever won a game on his own, either. Kobe takes an extremely high volume of shots at a respectable shooting percentage. He does many other things relatively well for a shooting guard, such as getting rebounds and assists, but he's not too special - on a per-minute basis - with regards to other possession factors, such as steals, block and turnovers.

My point is, many people consider Kobe the best player on the planet, hands down. As a matter of fact I heard two announcers mention it during the recent Lakers-Cavs game. What they mean, I think, is that Kobe is the most amazing shooter. He seems to have an uncanny knack in making difficult shots, he appears fearless on the offensive end, and he has tremendous 'hot streaks'.

These are all subjective factors. In other words, they are the antithesis of what this blog is all about. People appreciate what Kobe does as an art form. At times his physical grace is quite beautiful and frankly, rather amazing. However, the fact remains - while Kobe is an excellent all-around player, and a fairly efficient scorer, he is in no way the best player in the league if by 'best' you mean 'contributes the most to helping his team win'.

It's no secret that Kobe was reliant upon a certain player during the Laker's recent championship successes. Shaq was a possession force - he rebounded extremely well, blocked many, many shots and turned the ball over infrequently. His ability to gain possessions gave Kobe the opportunity to take many additional shots. But Shaq could shoot too (from close range), and since he was a center he shot at a much, much higher percentage than did Kobe.

I think I need to stop this post now. I'm starting to ramble. My point - really - is that possession factors are undervalued in the NBA, while scoring is overvalued. Think about it - if team A has more possessions than team B, and team A shoots a higher percentage than team B, is it even possible for team B to win the game?

The Better Line in Memphis (vs Dallas)

Yesterday the Dallas Mavericks defeated the Memphis Grizzlies 103-84. The AP write up states that Memphis was "led by Rudy Gay with 18 points". Also, on the Yahoo Sports scoreboard page, Rudy's line of 18 pts, 4 reb and 1 ast is the only one shown for the Grizzlies.

However, Kyle Lowry's line was 17 pts, 5 reb and 4 ast in similar minutes (both were the only Memphis players with over 40 mins). Was this actually the better line?

It sure looks like it on the surface, but of course we need to dig deeper. For starters, Gay scored his 18 points on 7-14 shooting, while Lowry only connected on 5-14 shots. So now it looks like things swing back in Gay's favor.

But what really matters is the relative value of each of these stats. What also matters - a great deal - are the other stats recorded in the box score.

For instance, Gay recorded one steal, but had two turnovers. It's clear that a steal is basically the opposite of a turnover, so his net is one turnover. It's important to remember that that turnover lead to a Dallas possession that may have resulted in a shot and perhaps, points.

Lowry, on the other hand, recorded three steals and zero turnovers. In other words, he netted three extra possessions for his team that may have resulted in points.

Ok, we can go back and forth for a while longer, but it's clear that Gay had the better shooting night while Lowry performed better in regards to most everything else.

I calculated the WP48 for each player:

Lowry: .173
Gay: .023

Average is .100, so it's clear that Lowry did much more to help his team win than did Gay.

Important note: there is a position adjustment in their WP48 scores. In this case we are comparing a PG to a SF, which is sort of like comparing apples to oranges. PGs play a 'risky' position, because PGs turn the ball over more and shoot worse than the other positions on average. So Lowry is credited because he played better than the average PG in comparison to how well Gay played compared to an average SF. Gay actually slightly outperformed Lowry if you ignore the position adjustment.

In other words, the Grizzlies got more production out of the PG spot relative to an average PG than they got out of the SF relative to the average SF.

Dave Berri at the Wages of Wins has posted on each of these players' career averages. These are the WP48 for each player through 16 games this season:

Lowry: .185
Gay: .019

And these are their WP48 from all of last season:

Lowry: .292*
Gay: -.035

*Lowry only played 170 minutes last year.

So far, Lowry seems to be quite a productive point guard. Gay, on the other hand, has been a consistently unproductive small forward. Yesterday's game, despite being such a small sample, fell in line with the historical data.

Still, Gay was credited with 'leading' Memphis because he scored the most points.

First Post

I'll write more regarding the mission statement of this blog, but for now I'll just mention that this blog will focus solely on sports news and insights that can be statistically validated.

Specifically, I will be using the Win Score metrics developed by Dave Berri et al, the writers of The Wages of Wins (Berri is the primary author of the WOW blog found in my 'links' section.

I have studied Win Score and compared it to various other statistical metrics, and find it to be a cut above the rest. If you disagree with some of the results of the metric, then I recommend biting your tongue until you have taken the time to understand it first.

Ok, on to the first post. It's a short one. Yesterday, the Cleveland Cavs (my team) defeated the LA Lakers 98-95. The AP write up of the game predictably focused on the duel between LeBron James and Kobe Bryant, the NBA's two leading scorers. This makes sense, since sportswriters are, ultimately, artists (or perhaps craftsmen), and they try to tell the most compelling story. In the words of the story: "LeBron James won his personal matchup with Kobe Bryant, the league's two leading scorers".

Well, LeBron certainly won the duel if all you do is focus on their scoring output. But there are many other aspects to a basketball game. It is widely accepted that 'Role Players' fulfill, well, necessary roles on the court (ie roles other than scoring). Consequently, 'Star Players' can contribute in the same ways as 'Role Players' in addition to their scoring, and the more they contribute in these areas the better they are, overall.

This is what the Win Score metric is all about. I have put together a somewhat simplified version of the metric - it's not exact, but it's very close. I won't get into the details now - you can visit the WOW site to find out everything you'll need.

What I have calculated is WP48, or Wins Per 48 minutes. So, if a player performs at a certain level for 48 minutes, they will produce a certain amount of wins. An average performance is a WP48 of .100.

As much as it pains me to say it, Kobe had the better game yesterday.

WP48
LeBron: .217
Kobe: .488

Both players shot the ball at close to a 50% rate, but Kobe had the edge in terms of rebounds, assists and turnovers. Rebounds and turnovers, in particular, are extremely undervalued in the mainstream sports press.

Thus ends the first post. I am not sure exactly what types of posts I will put on this blog, and it may take me a while to get going because I have another blog (the Lost on Purpose link - a music site), but I just might start posting my own version of 'Player of the Week' or 'Big Game of the Week', all based on the WOW metrics.

Then again, I might pick a game a day and do a more 'rational' write up than the one found in AP reports (or on Sportcenter).

I guess this wasn't such a short post after all.