The Celtics are finally whole again — now come the Spurs and Thunder

For the first time all season, we’re seeing the version of the Celtics everyone has been waiting for. So far, so good.

That was the first impression when Jayson Tatum stepped back on the floor after nearly 10 months away. After Sunday’s win against Cleveland, Joe Mazzulla said Tatum “gave the game exactly what it needed,” praising the forward’s rebounding and defensive possessions in his second game back.

Against Dallas, he looked like a star reacquainting himself with the pace of real basketball again — a few missed shots, a bunch of flashes, but the unmistakable sense that the engine was warming up. Two days later for the Cleveland matinee, the Celtics’ ecosystem looked even more cohesive with Tatum inside it.

Aside from the recent injury to Nikola Vučević thinning the frontcourt a bit, this is the closest Boston has looked to the version of itself it spent the whole season waiting to see.

The next stretch of the Celtics’ schedule is where the real questions begin. The first two games have had strong rom-com opening energy: everything’s working, everyone’s smiling, and Tatum looks like the perfect guy to bring home to Mom and Dad.

But here come the Spurs and Thunder to complicate the plot. The Celtics visit San Antonio today at 8 p.m. ET, followed by a trip to Oklahoma City on Thursday night at 9:30 p.m. ET.

San Antonio and Oklahoma City are two of the most fascinating teams in the league right now, built around players who bend the shape of the game in completely different ways. One has a 7-foot-4 defensive cheat code who can erase mistakes that most defenses simply have to live with. The other orchestrates the kind of organized chaos that turns a lot of opponent possessions into turnovers and easy points the other way.

In other words, the Celtics are about to find out what the fully assembled version of this team actually looks like against the real contenders this season. If the Mavs and Cavs were the soft opening, then the Spurs and Thunder are the stress test to follow.

The Victor Wembanyama Problem

The Spurs don’t defend the way most teams defend. Then again, most teams don’t have Victor Wembanyama.

Most defenses try to stop the first action, but San Antonio is comfortable letting plays unfold because lurking somewhere behind it all is Him. Wembanyama doesn’t always guard the other team’s star directly. In fact, the Spurs often prefer the opposite. They let him roam. Float. Wait for someone to think they’ve beaten the defense before suddenly appearing at the rim to erase the mistake.

The Celtics have already seen firsthand how hard that can be to overcome.

In the third quarter of the Celtics’ first matchup against San Antonio, Wembanyama fueled an 11–2 Spurs run that flipped the game. Later in the fourth, a closing double-big lineup with him and Luke Kornet helped wall off the paint. Boston couldn’t rally as San Antonio held on for a 100–95 win.

This time around, Boston’s answer can’t just be hoping Wembanyama misses just enough rotations defensively to cost the Spurs. Fortunately, the Celtics have an old, yet new, tool in Tatum.

This is exactly the kind of matchup where his two-way game is felt most. If San Antonio wants Wembanyama lurking in the paint, Tatum is the Celtic most equipped to punish that without forcing the issue. He can screen, slip out of actions, make the extra pass before the help fully arrives, and attack the second line of the defense instead of charging blindly into the first. Most players see Wembanyama and speed up. Tatum tends to get comfortable and make the right read.

Brown matters too, but for different reasons. Boston still needs someone willing to challenge the paint even when the help defense is loading up. Brown’s first step can bend the Spurs defense, but picking the right moments to bend it will be key, especially with De’Aaron Fox and Stephon Castle applying ball pressure that can quickly turn mistakes into transition the other way.

In a familiar role, Derrick White becomes the connective tissue here. Against an aggressive, blitzing defense, his ability to make the correct read against his former team becomes huge: a quick swing pass, a back cut, a drive before the defense has fully loaded up. The kind of quietly excellent Derrick White plays Celtics fans are used to will be needed for Boston to keep things close.

Boston’s front court will have its hands full, in the understatement of the season. Queta and Garza will likely see plenty of the Wembanyama matchup, but the Celtics showed in the first meeting that they’re willing to get weird. Baylor Scheierman and Jordan Walsh both spent plenty of time guarding Wemby in January, and it would not be surprising to see Joe Mazzulla reach for those kinds of do-it-all defenders again.

Wembanyama is the headline in this matchup, but the pieces around him are an equal part of the success San Antonio has had this season. Fox brings downhill speed. Castle adds another steady ball handler. Devin Vassell punishes late help.

Boston doesn’t need a perfect game to beat San Antonio, but it will need a disciplined one. Also, the Spurs have a new postgame drum celebration this season. It’s kind of awesome, it’s definitely intimidating, and I’d prefer the Celtics not be the reason they get to do it tomorrow night.

Thunder in the distance

The Celtics haven’t seen Oklahoma City yet this season, which is honestly part of the intrigue since the Thunder are the kind of team that’s easier to understand after you’ve actually experienced them once.

Watching them on TV, the defending champs look young, fast, and extremely organized. For opponents, the view up close is harsher. Everything moves half a second faster than expected, and every possession demands an extra decision you didn’t think you’d need to make.

A lot of the action starts and ends with Shai Gilgeous-Alexander.

SGA plays more patient than fast. He dribbles into space, waits for a defender to lean the wrong direction, then slides past them like he’s found a seam nobody else can see. Most defenses manage to contain the first move well enough.

But Oklahoma City builds their offense around what happens after that.

Once Shai gets a defender leaning, the rest of the Thunder offense is already in motion. Chet Holmgren slides into space for a pick-and-pop. Jalen Williams cuts through the lane. Suddenly the weakside corner feels just a little too far away to recover to.

And if the possession stalls, Holmgren is still standing there as a 7-foot bailout option who can either shoot over the top of a closing defender or put the ball on the floor for one dribble and finish.

Boston will have answers for some of that. Derrick White, Hugo Gonzalez, Jordan Walsh, and Baylor Scheierman are all legit defenders, adept at staying attached to slippery scorers like Shai. The Celtics have built their entire defensive identity this season around making elite players work through multiple defenders.

But the Thunder are built to stress exactly that kind of system.

Lu Dort might spend most of the night attached to Jayson Tatum, which could wear on the recently returned superstar. Dort has built a reputation for making life miserable for opposing stars, turning every dribble into a small fight. If you watched the Thunder-Nuggets game last week and last night, you saw how far that intensity can go when a dust-up with Nikola Jokić ended in a flagrant two for Dort and a pair of crazy eyes from Jokic.

The Thunder thrive when possessions get frantic, while Boston usually wins when the game slows down and the ball keeps moving. Something will have to give. The cast behind Tatum will play a big role in dictating which team is the one giving.

Jaylen Brown is the Celtic most capable of disrupting Oklahoma City’s defensive rhythm. When the Thunder send aggressive point-of-attack pressure — something Dort, Cason Wallace, and Alex Caruso all excel at — Brown’s ability to attack the second layer of the defense becomes crucial. If he gets downhill before the Thunder can load up their help, Boston forces Holmgren into constant decisions at the rim instead of letting him sit comfortably as a shot blocker.

Boston Celtics star Jaylen Brown is defended by Kenrich Williams of the Oklahoma City Thunder.

Derrick White operates differently but is just as important to the offense. Oklahoma City’s defense relies heavily on rotations and quick recoveries, and White is one of the few guards in the league who consistently punishes that kind of system with early reads. A swing pass before the trap arrives. A quick drive when the defender is leaning the wrong direction. Those little half-second advantages are how teams prevent the Thunder from turning possessions into chaos.

And then there’s Payton Pritchard, whose game actually matches up surprisingly well against this kind of defense. Oklahoma City loves shrinking the floor and sending help from unexpected angles. Pritchard’s deep shooting range forces defenders to stretch that coverage farther than they’d like. If the Thunder overcommit to Shai’s defensive pressure or start flying around Boston’s actions, Pritchard is exactly the type of guard who can punish it with quick pull-ups or blow-bys that immediately give Boston advantages.

The real challenge for Boston’s offense won’t just be handling Oklahoma City’s initial pressure. They’ll need to keep possessions organized before the Thunder can turn them into the kind of scramble they thrive in.

Oklahoma City will be a great test to see whether this new/old version of Boston can stay whole when the game starts moving faster than they’re used to.

Time to find out if “whole” is good enough

It’s been an incredibly fun season, but the ceiling of this Celtics team has mostly existed as a hypothetical.

What would this team look like once Jayson Tatum returned? Would Jaylen Brown’s breakout season continue with Tatum alongside him again? Would the depth that carried Boston through the winter hold up against the league’s best teams?

Now those questions are about to get real answers.

San Antonio brings the league’s strangest defensive weapon. Oklahoma City brings one of the most complete teams in basketball. And Boston finally gets to see what its full roster looks like against both.

The Celtics look whole again. The next two games will tell us what that actually means.

The Celtics are finally whole again — now come the Spurs and Thunder

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