Thunder center Isaiah Hartenstein’s injury nukes big summer plans

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Thunder center Isaiah Hartenstein’s injury nukes big summer plans

Originally posted on NBA on ClutchPoints
By Julian Ojeda, ClutchPoints | Last updated Aug 18, 2026 11:47 AM ET

Oklahoma City Thunder center Isaiah Hartenstein will have to put his highly anticipated return to international basketball on hold after suffering an ankle injury that derailed his plans to play for Germany this summer.

The setback comes just one month after Hartenstein agreed to a three-year, $75 million contract to remain with the Thunder.

According to the latest press release from the German Basketball Federation, shared by BasketNews, Hartenstein will not compete for Germany during the upcoming FIBA 2027 World Cup Qualifiers window after consulting with Oklahoma City’s medical staff.

Hartenstein had been expected to make his return to the German national team for the first time since 2018. The 28-year-old center appeared on Germany’s preliminary roster for the upcoming qualifiers, setting the stage for his long-awaited return to international competition.

However, an ankle injury changed those plans. After extensive discussions with the Thunder’s medical staff, Hartenstein and Germany determined that focusing on his rehabilitation throughout the summer would be the best course of action.

The decision prioritizes Hartenstein’s long-term health and availability for the upcoming NBA season. Although he will not be able to participate on the court, Hartenstein is expected to remain with the German national team during the opening stages of training camp to support the group.

Isaiah Hartenstein turns attention toward Thunder season

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Hartenstein’s injury comes after another productive season in Oklahoma City. He appeared in 47 games for the Thunder, averaging 9.2 points, 9.2 rebounds, 3.5 assists and one steal in 24.2 minutes per game.

The veteran big man remained an important piece of Oklahoma City’s rotation as the Thunder attempted to defend their 2025 NBA championship. Their bid to repeat ended in May when they lost to the San Antonio Spurs in a seven-game Western Conference Finals series.

Hartenstein’s value to Oklahoma City extended beyond his scoring, with his rebounding, screening, passing and interior presence complementing the Thunder’s core.

The Thunder reinforced their commitment to Hartenstein this offseason by bringing him back on a three-year, $75 million deal. His withdrawal from international competition now gives him the summer to concentrate on recovering from the ankle injury before Oklahoma City begins preparations for another championship pursuit.

For Hartenstein, the injury postpones a return to Germany’s national team that had been eight years in the making. His attention will instead shift toward rehabilitation and ensuring he is healthy for the start of the Thunder’s 2026-27 campaign.

This article first appeared on NBA on ClutchPoints and was syndicated with permission.

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