The Boston Celtics’ first-round playoff exit was a wake-up call. Not a gentle tap on the shoulder. A blaring horn in the middle of the night.
The Celtics blew a 3-1 lead to the Philadelphia 76ers. They watched a hobbled Joel Embiid — a player who could barely run — dominate the paint because they had no answer for his size and physicality.
The front office failed to address the frontcourt last offseason. They won’t make that mistake again.
Enter Isaiah Hartenstein.
According to Boston Herald reporter Zack Cox, the 28-year-old Thunder center is a “good deal” for the Celtics for many reasons. He’s a 7-footer. He’s a rebounding machine. He’s one of the best passing big men in the league. And he might be available.
Let me break down why Hartenstein fits, how the Celtics could acquire him, and why he could be the missing piece that finally gives Boston the interior presence they’ve been lacking.
The Hartenstein Profile: A Passing, Rebounding, Screen-Setting Machine
Let me start with the player.
Isaiah Hartenstein is 28 years old. He’s 7-feet tall. He’s been a key piece of the Oklahoma City Thunder’s championship-winning roster. Last season, he averaged:
9.2 points per game
9.4 rebounds
3.5 assists
He fell just short of a double-double average — a mark he actually hit the year before.
But the numbers don’t tell the full story. Hartenstein is one of the NBA’s best facilitating big men. He ranks in the 90th percentile for his position in assist percentage, per Cleaning the Glass. He’s near the top of the league in screen assists per game.
What he does well:
Rebounding. Hartenstein is a monster on the glass at both ends. He averaged 9.4 rebounds per game last season. He’s physical. He boxes out. He doesn’t get pushed around.
Passing. He’s one of the best passing centers in the league. He can find cutters. He can hit the roller. He can make the extra pass. He keeps the offense moving.
Screen-setting. Hartenstein sets bone-crushing screens. He ranks near the top of the league in screen assists. He creates space for guards.
Defense. Hartenstein is not a shot-blocking freak, but he’s a smart, positional defender. He doesn’t get lost. He rotates. He contests.
What he doesn’t do well:
Scoring. Hartenstein is not a post-up threat. He’s not going to give you 20 points. He scores on put-backs, lobs, and dump-offs.
Shooting. He doesn’t stretch the floor. He’s a traditional big who operates around the rim.
The Cox Analysis: Why Hartenstein Fits Boston
Let me bring in the expert perspective.
Zack Cox of the Boston Herald laid out the case perfectly:
*“A key piece of the Thunder’s championship-winning roster, Hartenstein would provide a major boost to the Celtics’ shaky frontcourt if financial constraints prevent him from sticking around Oklahoma City. The 7-footer is an effective rebounder at both ends and one of the NBA’s better facilitating big men, ranking in the 90th percentile for his position in assist percentage, per Cleaning the Glass, and near the top of the league in screen assists per game.”*
Let me translate that: Hartenstein does all the little things that don’t show up in box scores. He sets screens. He makes the extra pass. He rebounds. He defends. He’s a winning player.
The Embiid Nightmare: Why Boston Needs Size
Let me remind you why the Celtics are in this position.
In the first round of the playoffs, Boston built a 3-1 lead against the 76ers. They were one win away from advancing. Then Joel Embiid returned to form.
Embiid — even at 70%, even hobbled by injuries — dominated the paint. The Celtics had no answer. They couldn’t body him up. They couldn’t keep him off the glass. They couldn’t stop him from getting to his spots.
Kristaps Porzingis was injured. Al Horford was 40 years old. Neemias Queta was overmatched. Nikola Vucevic was a traffic cone.
The Celtics lost three straight games. Their season ended in humiliation.
Brad Stevens knows that can’t happen again. He needs size. He needs physicality. He needs a center who can at least make Embiid work for his points.
Hartenstein is that player.
The Financials: How Boston Could Acquire Hartenstein
Let me get into the money.
Hartenstein has a $28.5 million club option in his contract for next season. That’s a lot of money. The Thunder have to decide whether to pick up that option or let him walk.
Oklahoma City already has huge financial commitments. Shai Gilgeous-Alexander is on a supermax. Jalen Williams and Chet Holmgren are due for extensions. The Thunder are going to be expensive.
Hartenstein might be the odd man out.
If the Thunder decline his option, Hartenstein becomes a free agent. The Celtics could sign him outright.
If the Thunder pick up his option, they could trade him. And Boston has a $27.7 million traded player exception — created when they swapped Anfernee Simons for Nikola Vucevic — that could absorb Hartenstein’s salary.
That’s a perfect fit.
The Thunder’s Dilemma: A Championship Roster Getting Expensive
Let me look at the other side.
The Thunder just won a championship. They have a young, talented, expensive roster. Shai Gilgeous-Alexander is a superstar. Jalen Williams is an All-Star. Chet Holmgren is a future Defensive Player of the Year.
All of them are getting paid. All of them are getting paid a lot.
Hartenstein is a valuable piece, but he’s not a star. He’s a role player. And role players are often the ones who get squeezed when the cap gets tight.
The Thunder might decide that they can’t afford to keep everyone. They might decide to trade Hartenstein for assets rather than lose him for nothing.
That’s where the Celtics come in.
The Hartenstein-Vucevic Comparison: A Clear Upgrade
Let me address the obvious question: how is Hartenstein better than Vucevic?
Vucevic is a shooter. He spaces the floor. He’s a former All-Star. But he’s also a liability on defense. He’s slow. He can’t protect the rim. He gets exposed in the playoffs.
Hartenstein is the opposite. He’s not a shooter. He doesn’t space the floor. But he’s a defensive anchor. He rebounds. He sets screens. He makes winning plays.
The Celtics don’t need a center who can shoot. They have enough shooting. They need a center who can defend, rebound, and do the dirty work.
Hartenstein is that center.
The Fit Next to Porzingis
Let me talk about how Hartenstein would fit next to Kristaps Porzingis.
Porzingis is a stretch big. He spaces the floor. He blocks shots. He’s a unicorn when healthy.
Hartenstein is a traditional big. He rebounds. He sets screens. He does the dirty work.
Together, they complement each other perfectly. Porzingis can roam and block shots. Hartenstein can body up against opposing centers. Porzingis can stretch the floor. Hartenstein can crash the glass.
The Celtics would have two completely different looks at center. That’s a luxury.
The Celtics’ Other Needs: Guard Depth
Let me quickly mention that the Celtics also need guard depth. Derrick White is the starter. Payton Pritchard is the backup. Behind them? Not much.
But the center position is the priority. The Celtics can address guard depth with the mid-level exception or the draft.
The Queta Question: Bench Role or Trade Bait?
Let me address Neemias Queta’s future.
Queta is a solid backup. He’s not a starter. If the Celtics acquire Hartenstein, Queta would slide into a bench role — which is where he belongs.
He could also be trade bait. He’s young. He’s cheap. He has value.
But the Celtics would be wise to keep him as depth.
Final Verdict: Make the Call for Hartenstein
Here’s my honest take.
The Boston Celtics should pursue Isaiah Hartenstein. Not because he’s a superstar — he’s not. Not because he’s a shooter — he’s not.
Because he’s a winning player. Because he does the dirty work. Because he rebounds, sets screens, and makes the extra pass. Because he’s exactly what the Celtics were missing against Joel Embiid.
The financials work. The fit works. The need is urgent.
The Celtics have a $27.7 million traded player exception. They have assets. They have motivation.
Hartenstein is the right player at the right time.
One thing’s certain: The Celtics will have a new starting center next season. And Isaiah Hartenstein should be at the top of their list.