Hartenstein agrees to three-year, $75 million contract with Thunder

Isaiah Hartenstein intends to sign a new three-year, $75 million contract to return to the Oklahoma City Thunder through the 2028-29 season, sources told ESPN's Shams Charania on Friday. Hartenstein's representatives negotiated a deal with the Thunder that includes a maximum 15 percent trade kicker and a unique mutual option that allows both parties to rework the agreement again in 2028 before the final season, sources said.

The contract brings Hartenstein's total earnings with the Thunder to $134 million guaranteed over five years.

Player background A 7-foot, 250-pound center, Hartenstein arrived in Oklahoma City as a free agent in the summer of 2024. He averaged 10.3 points, 10.1 rebounds and 3.7 assists per game in his first two seasons, primarily serving as the Thunder's starting center.

Hartenstein, 28, has dealt with injuries during his tenure, including a broken left thumb that sidelined him to start the 2024-25 season and a lingering right calf strain last season. Those injuries limited him to 104 games over the two regular seasons.

He has played in all 38 of the Thunder's playoff games over the past two years, starting 35 of them, and averaged 9.1 points, 8.3 rebounds and 2.6 assists per game in the postseason.