What is Jeff Green?
This is the question posed by Oklahoman Thunder reporter Darnell Mayberry today.
One of the most oft-repeated lines by the talking heads of the NBA, be they Charles Barkley, John Hollinger, or even me, is that the Thunder's interior defense is going to be their long-term Achilles Heel this season. Team defense is organic in a way that the offense necessarily is not. On offense, if an offensive set breaks down, there is still a strong probability that an individual player can overcome the breakdown with a positive play that results in points. Defense, however, exists like a complex perpetual organism - the play of one player can have immediate effects on the rest of the players, and one defensive set can have an impact on future defensive sets.
The Thunder's inability to defend the post effectively has both the direct effect of opposing big men having success in the interior, as well as the effect of making it substantially more difficult on the perimeter players who try to stay in front of their own men. If the post defender loses his position, this necessitates the help defense to come from the weak side. When the help defense does come, it then opens up the floor for skip and swing passes out to perimeter players. The perimeter players then have the advantage of either open shots or a hard pump fake and dribble-drive penetration. The net result is that the Thunder are constantly playing catch-up on defense, leave shooters open, give up fouls, and allow inferior teams to remain in games longer than they should.
Is that all Jeff Green's fault?
No. Of course not. Green is being asked to consistently do something in which he does not possess the tool set to do. A true power forward has the strength and length to meet the post player head on and in a best case scenario make him think, "I"m not going anywhere on this play. Let's try something else." Green, possessing good length, good ball instincts, and general discipline in avoiding fouls, does not fit that bill to a T.
What to do?
Here is the cross-road of debate where I think people are becoming a tad bit too myopic. The debates seems to be boiling down to:
- Keep Green out there, suffer defensively, hope that he continues to bring some of this renewed defensive focus.
- Give up on Green and trade him away/let him walk, hoping to bring in a more natural power forward.
all stats provided by 82games.com
Let's take a look at this table, make some observations, and then attempt to draw a few conclusions.
- Highlighted in blue is the group that is the starting line-up, and has logged the most minutes together.
- Highlighted in green is the group that has logged the second-most minutes together, and if you look closely, you can see that the only difference is Nedad Krstic.
- Of the top 10 rotations that have logged at least 30 minutes together, Green is in both groups that allowed over 50% shooting, and three groups that held the opponent to under 50% shooting.
- Defensively, the best rotation that has logged major minutes together does not include Green (Westbrook-Sefolosha-Durant-Ibaka-Krstic)
Have you noticed how the Thunder frequently fallen behind in the 1st quarter? How seeing the Thunder finishing the 1st with a lead is a peculiarity? Look no further than the data highlighted in blue. The starting five are on average outshot in field goal percentage, 51% to 46%. They give up a high number of field goals close to the rim (dClose). Their net point differential (Win +/-) is a negative 12. They are frequently outscored (Win%).
Assertion: the starting five rotation is a bad defensive team.
The rotation highlighted in green has but one difference: Serge Ibaka has been substituted for Krstic. The result is that the Win% jumps from a 44.4% to 55.5%. The difference in shooting percentages all but vanishes. Shots close to the basket drop drastically. The net point differential goes from negative to positive (+10).
Assertion: the front line plays good defense when Ibaka is paired with Green.
Let's reverse the roles and see what happens, now switching Ibaka in for Green, and then paired with Krstic. This rotation is the 3rd highest in minutes logged. The Win% jumps even higher, to 57.1%. The difference in shooting percentage turns positive. The point differential jumps up to a rotation high of +28.
Assertion: the front line defense is maximized when Ibaka is paired with Krstic.
- The starting five rotation frequently is the cause for the Thunder struggling early, and the line-up should be reshuffled.
- Ibaka is their best defender and needs to be on the court more than the 26 minutes per game he is getting. Adding eight to 10 minutes to his game log could pay huge dividends.
- Green will continue to have to play out of position on defense, but his struggles are minimized when he's along side Ibaka. I think that the length and athleticism they provide, paired with Durant's equal dimensions, work well together defensively.