The Thunder’s Isaiah Hartenstein dilemma is already the first Game 2 question

The adjustment came early

The most telling lineup move came at halftime, when Cason Wallace replaced Hartenstein for the start of the third quarter. That was a clear signal from the Thunder coaching staff: the original plan was not working.

But the shift had actually started much earlier. Hartenstein was pulled just a few minutes into the game after the Spurs jumped out to a 7-0 lead. From there, Oklahoma City spent the rest of the night searching for the right balance between size and spacing.

Wallace brought more speed at the point of attack, put more pressure on San Antonio’s young guards and helped the Thunder lean into the spread-out style that has been their identity for two years running.

But it was not just about matching pace. The game was tilting around Wembanyama’s presence and San Antonio’s control of the glass.

The numbers behind the problem were brutal

San Antonio won the rebounding battle 61-40 and outscored Oklahoma City 52-38 in the paint. The Thunder shot just 16-for-50 with Wembanyama on the floor, compared to 10-for-16 when he sat.

That does not mean the only answer is to go smaller. But it does highlight how little value the Thunder were getting from their bigger lineups compared to the tradeoffs they brought.

Hartenstein finished with two points, two rebounds, two assists, two blocks and a steal in 12 minutes, not enough to justify how the Spurs were able to use his defender as a roaming shot-blocker.

The Thunder wanted more size to deal with Wembanyama, but the cost in spacing seemed to help him control the game even more.

Spacing pressure told its own story

Once Wallace was in, the Thunder looked more like themselves: quicker, more fluid and better able to play through drive-and-kick actions.

Gilgeous-Alexander had a bit more room to work with, though the challenge of Wembanyama’s reach never really went away.

But playing smaller does not automatically solve the Wembanyama problem. It can make rebounding even tougher unless perimeter defense is sharp enough to keep the Spurs out of the lane in the first place.

That is the puzzle for Mark Daigneault. If Hartenstein plays alongside Holmgren, spacing takes a hit. But if he sits, the Thunder lose size. Game 1 showed both issues clearly enough that Game 2 cannot just be a simple switch in one direction.

Game 2 is about balance, not panic

That is why the Hartenstein question is so important. The Thunder still need his size at times to keep the Spurs from dominating the boards. But they also cannot afford to clog their own spacing when San Antonio is already walling off the paint.

The opener made that tension impossible to ignore. The Thunder can score enough to win this series, but only if their lineups stop helping the Spurs dictate the terms.

One adjustment could be matching Hartenstein’s minutes more directly to non-Wembanyama stretches, especially when Luke Kornet is on the floor. Another is leaning even harder into Holmgren-at-center lineups to pull San Antonio’s rim protection away from the basket.

Neither approach is perfect. That is the point. The Thunder need a blend, not a drastic overreaction.

What OKC has to decide now

Daigneault’s challenge is not just big vs small. It is about finding frontcourt combinations that let Oklahoma City play at its preferred pace without giving up the rebounding battle before the play even starts.

If Wallace starts again, the guards will need to help on the glass. Holmgren will need to be more active as a spacer and screener. And if Hartenstein plays, those minutes will need to be tightly managed, with clear purpose, not just dropped into the rotation by habit.

Otherwise, what looked like a one-off Wembanyama explosion in Game 1 could quickly become a sign that the Spurs, and not the Thunder, are setting the terms of the series.