The Oklahoma City Thunder are holding onto one of their most important frontcourt players. According to an ESPN report released Friday evening, the team has reached an agreement on a new three-year contract with center Isaiah Hartenstein worth $75 million.
The new deal will keep the 28-year-old big man in Oklahoma City through the 2028-29 season. When combined with his previous contract, Hartenstein will have earned a total of $134 million guaranteed across five seasons with the Thunder, per the report.
Hartenstein originally came to Oklahoma City as a free agent in 2024, signing a three-year deal valued at $87 million that included a third-year team option. The 7-foot center proved to be a crucial part of the Thunder’s championship-winning squad in 2024-25, making 99 starts in 104 regular-season games and appearing in 35 of 38 playoff contests over the past two seasons.
According to the report, the newly agreed-upon contract comes with a maximum 15% trade kicker. It also includes a mutual option that gives both Hartenstein, his agents, and the team the ability to restructure the agreement before the contract’s final season.
This past season was a difficult one for Hartenstein health-wise, as injuries held him to just 47 games — 46 of which he started. During those appearances, he averaged 9.2 points, 9.4 rebounds, 3.5 assists, and 24.2 minutes per game. Across his entire eight-year NBA career — which has included stops with the Houston Rockets, Denver Nuggets, Cleveland Cavaliers, Los Angeles Clippers, New York Knicks, and Thunder — he has averaged 7.1 points, 6.7 rebounds, 2.2 assists, and 20.0 minutes per game in 426 games, with 160 starts.
