Oklahoma City will arrive at training camp with one obvious absence at the front of its defense: Lu Dort is gone.
For years, Dort volunteered for the matchup nobody else wanted. He chased quick guards through screens, leaned into powerful wings and absorbed collisions thirty feet from the basket. Opposing stars rarely received a comfortable opening possession. Dort made sure of that.
Now he plays for Atlanta.
The Thunder still have more defensive talent than almost anyone. Cason Wallace can swallow dribbles. Alex Caruso turns routine actions into chaos. Chet Holmgren waits behind everything with elite length and timing. Jalen Williams, when healthy, gives Mark Daigneault another large, switchable body.
None of that completely answers the question Dort leaves behind.
Somebody still has to take the first hit.
Wallace looks like the natural choice. Yet replacing Dort involves more than changing one name on the lineup card. Oklahoma City also lost Aaron Wiggins and Isaiah Joe, thinning a perimeter group that helped Daigneault maintain pressure without overworking his best defenders.
The Thunder do not need to find another Lu Dort.
They need to divide his job intelligently.
This defense was operating at another level
Calling Oklahoma City the NBA’s best defense last season does not quite capture how dominant it became.
The Thunder finished with a 106.5 defensive rating, 8.3 points per 100 possessions better than league average. NBA data placed that relative defensive performance behind only the 2003-04 San Antonio Spurs across the past three decades.
That distinction matters.
Oklahoma City did not finish first because another contender had a bad final week. The Thunder consistently suffocated possessions. They held opponents to 43.7 percent shooting, produced 20.7 deflections per game and generated 22.0 points per night off turnovers. Their pressure forced 16.7 turnovers per game.
Dort sat at the beginning of many of those possessions.
His value was not limited to steals, blocks or traditional defensive box-score numbers. He allowed teammates to gamble because they trusted the first layer. Holmgren could remain closer to the basket. Caruso could jump a passing lane instead of plugging an emergency gap. Shai Gilgeous-Alexander could dig toward the ball without watching the entire shell crack behind him.
That freedom starts with resistance.
Dort supplied it every night.
Now Daigneault has to recreate that resistance without asking one player to become something he is not.
Cason Wallace should get the hardest guard first
Start with Cason Wallace.
At this point, calling him merely promising undersells what he has already become. Wallace earned All-Defensive Second Team honors last season, played 77 games and led the NBA with 150 steals. That comes out to 1.95 steals per game. His 4.4 deflections per game also topped the league.
The numbers fit the film.
Wallace rarely looks frantic at the point of attack. His feet stay underneath him. He does not reach simply because the ball enters his space. Instead, he waits for the dribbler to expose the ball, attacks that mistake and recovers quickly when the steal is not there.
That patience separates him from young guards who defend through pure energy.
The challenge now becomes volume.
Dort could spend Tuesday chasing a small guard around two screens, then spend Thursday absorbing shoulder-to-chest drives from a much stronger wing. Wallace, listed at 6-foot-3 and 195 pounds, can handle physical assignments. Asking him to absorb every version of them across 82 games would be different.
The collisions matter.
So does fatigue.
Still, Wallace has already shown he can handle a larger role. He started 58 games last season while Jalen Williams missed significant time. With Dort gone, Wallace has the clearest path toward taking the opponent’s quickest creator from the opening tip.
He has earned that chance.
Caruso should be free to wreck possessions
Alex Caruso can guard the opponent’s best player.
That does not mean Oklahoma City should chain him to that assignment all night.
Caruso becomes most dangerous when he can read the entire floor. He sees actions developing early, blows up handoffs, digs at exposed dribbles and switches onto larger players without panicking. He has the instincts to ruin a possession before the offense even reaches its preferred option.
Picture Denver running a two-man action with Jamal Murray and Nikola Jokic.
Oklahoma City could place Caruso on Murray and ask him to chase every screen. He can survive that job. But his value grows when he can jump the handoff, stunt toward Jokic, briefly switch the action and then recover before Denver finds the opening.
He turns structure into confusion.
San Antonio presents a different problem with De’Aaron Fox. Wallace can take the first shift and force Fox to work for his initial driving angles. Later, Caruso can change the timing of the matchup and present another defender with different instincts.
That variety matters.
One elite stopper gives an offense a problem. Two elite defenders with different styles force the offense to solve the matchup repeatedly.
Wallace should take more of the nightly grind.
Caruso should remain the guy Daigneault unleashes when he wants to wreck the playbook.
Holmgren makes aggressive defense possible
Every perimeter defender gets beaten eventually.
The Thunder can survive those moments because Chet Holmgren stands behind them.
Holmgren earned All-Defensive First Team recognition last season. Opponents shot only 44.9 percent on two-point attempts he contested, the best mark among players who defended at least 400 such shots.
That changes how Oklahoma City’s guards can defend.
They do not need to stop every drive forty feet from the basket. They need to influence the route. Force the ball-handler away from his preferred hand. Push the drive toward Holmgren. Remove the clean pull-up. Buy the rest of the defense half a second.
Half a second can wreck an NBA possession.
Because Holmgren protects the back line, Wallace and Caruso can pressure without demanding perfection from themselves. They can crowd the ball, recover late and trust that the rim is not unprotected behind them.
But there is a limit.
A defender who loses half a step creates one problem. A defender who gets completely erased by a screen creates several.
Holmgren has to step higher. A wing rotates toward the roller. Another defender tags that rotation. Then the weak-side corner opens.
One bad navigation decision can produce a rotation, a mismatch and an uncovered shooter.
Dort prevented many of those sequences before they developed.
Wallace now becomes the first defender asked to prevent them.
Jalen Williams can absorb the bigger bodies
A healthy Jalen Williams gives Oklahoma City another solution.
Williams appeared in only 33 regular-season games last season while dealing with repeated hamstring issues. His absence hurt for obvious offensive reasons, but it also removed one of Daigneault’s cleanest defensive matchup tools.
Williams provides size without sacrificing mobility.
That becomes important on nights when Wallace encounters the wrong type of scorer. Asking a 6-foot-3 guard to wrestle with a powerful wing possession after possession makes little sense when Williams can take some of that work.
At 6-foot-5 and 211 pounds, Williams can absorb more contact, switch onto different positions and keep Oklahoma City’s lineup from becoming too small.
That allows Wallace to stay closer to his ideal assignments.
Let Wallace chase the quick guards. Let him press the ball and fight over screens. Let him use his hands against players who depend on rhythm.
When the matchup becomes a wrestling match, Williams can take a shift.
That is how Oklahoma City should think about replacing Dort.
Not as one player inheriting every assignment.
As several defenders dividing the punishment.
The other summer exits make the rotation trickier
Dort was not the only perimeter player to leave.
The Thunder moved Aaron Wiggins to Atlanta and Isaiah Joe to Detroit in separate trades before Dort later joined Atlanta through a three-team deal. Oklahoma City collected future draft capital in those moves, but the immediate basketball consequence matters more for this season.
Three experienced perimeter players are gone.
Joe was primarily valued for his shooting, while Wiggins provided dependable two-way minutes without demanding touches. Both also helped Daigneault build functional lineups around his stars.
Their departures create opportunity.
They also create responsibility.
Ajay Mitchell, Jared McCain and Nikola Topić now have clearer paths toward meaningful minutes. The question is whether those minutes can survive defensively against playoff-caliber guards.
That might become the most important rotation issue of camp.
Suppose Wallace starts and checks out after eight minutes. Caruso can take the primary creator, but Daigneault probably does not want his entire substitution pattern tied to that solution.
Mitchell may have to accept harder assignments. McCain must prove opponents cannot drag him into every action. Topić brings size at 6-foot-6, but NBA speed presents a different challenge from theoretical versatility.
Those minutes matter.
Dort’s absence may not feel most obvious at the opening tip. It could surface late in the first quarter, when Wallace rests, the starters scatter and an opposing guard finally sees a matchup worth attacking.
That is where defensive depth gets tested.
The West will hunt whoever cannot hold up
Playoff offenses are ruthless.
They do not attack your best defender out of pride. They search for the weakest one.
Denver can use Jokic as a screener until Oklahoma City reveals a matchup it dislikes. San Antonio can pair Fox with Victor Wembanyama and force defenders into uncomfortable decisions. Other contenders will screen, rescreen and flip angles until somebody misses a switch or falls behind.
Oklahoma City already understands the cost.
San Antonio pushed the Thunder through seven games in last season’s Western Conference finals before winning Game 7 in Oklahoma City, 111-103. The series offered another reminder that one vulnerable matchup can become the organizing principle of an entire playoff offense.
That is why the Dort question reaches beyond Wallace.
If Wallace handles the hardest guards, Caruso remains free to freelance. Williams can absorb stronger wings. Holmgren can stay closer to the rim instead of constantly stepping toward emergency drives.
Everything fits.
If Wallace cannot carry that workload, the pressure shifts backward.
Caruso has to defend more possessions at full intensity. Holmgren steps higher. Weak-side defenders rotate sooner. The defense starts solving problems that used to disappear at the point of attack.
One missing defender can touch every layer.
The bruises have to go somewhere
Training camp will produce the usual questions about starting spots, bench roles and chemistry.
The more important one is simpler.
Who takes the bruises now?
Wallace has the résumé to answer first. He already owns an All-Defensive selection, a league-leading 150 steals and nearly two steals per game. His hands, balance and timing place him among the NBA’s best young perimeter defenders.
The next test cannot be captured neatly on a stat sheet.
Can he chase an elite scorer through six screens and still pressure the seventh?
Can he absorb contact from a bigger creator without losing his legs?
Can he carry the assignment in January, then repeat it when a playoff series turns one matchup into an obsession?
Caruso will help. Williams can take stronger bodies. Holmgren can clean up mistakes behind them. Daigneault has enough defensive intelligence on this roster to spread Dort’s old responsibilities instead of dumping everything onto Wallace.
That should keep Oklahoma City among the league’s toughest defenses.
But the system worked because the first resistance arrived early.
Dort made the opening seconds of possessions miserable. He crowded space, absorbed contact and forced stars to work before they reached the action they actually wanted.
Oklahoma City does not need Cason Wallace to become Lu Dort.
It needs Wallace to make opponents notice Dort’s absence as little as possible.
If he can do that, the Thunder will not need a new defensive identity.
They will simply have someone new standing at the front door.
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FAQs
Who will replace Lu Dort for the Thunder?
Cason Wallace has the clearest path to the toughest guard assignments. Oklahoma City will likely split Dort’s broader defensive workload among several players.
How good was the Thunder defense last season?
Oklahoma City led the NBA with a 106.5 defensive rating. The Thunder also led the league in opponent shooting percentage and deflections.
How many steals did Cason Wallace have last season?
Wallace recorded an NBA-high 150 steals in 77 games. He averaged 1.95 steals and also led the league with 4.4 deflections per game.
Why is Chet Holmgren so important to Oklahoma City’s defense?
Holmgren protects the rim behind aggressive perimeter defenders. Opponents made only 44.9 percent of contested two-pointers against him last season.
What role should Alex Caruso have without Lu Dort?
Caruso can take difficult matchups, but Oklahoma City benefits most when he can roam, switch and disrupt actions instead of chasing one scorer all night.
