Isaiah Hartenstein: NBA Bio & FAQs

Player averages

Points per game: 7.8
Rebounds per game: 8.3
Assists per game: 2.5
Player impact estimate: 11.3

Isaiah Hartenstein Bio

Isaiah Hartenstein is an American professional basketball player for the Houston Rockets of the National Basketball Association (NBA). Born in New York City on May 5, 1998, he moved to Germany with his family at a young age. Hartenstein attended high school in Germany and began playing professionally for Zalgiris Kaunas of the Lithuanian Basketball League (LKL) at just 16 years old.

Hartenstein was part of a successful youth program at Zalgiris Kaunas and represented them in several international tournaments. In 2016, he led Zalgiris to win both the Baltic League Championship and FIBA U18 European Championship as well as being named MVP of U18 Europeans. As a result, Isaiah earned a spot on ESPN’s Top 100 International Prospects list ranking him 75th overall following his impressive performance during U18 Europeans.

In 2017, Hartenstein declared for the NBA Draft but withdrew after not receiving any invites to private workouts or interviews with teams leading up to draft night. He then returned to play one more season with Zalgris before signing with Liaoning Flying Leopards of China’s Basketball Association (CBA). During his time in China, Isaiah continued developing as an all-around player averaging 14 points per game while shooting 42% from three-point range alongside 7 rebounds per game over 30 games played throughout 2018-2019 season.

Thanks to its impressive performances overseas, Hartenstein was once again put among top prospects when entering 2019 NBA Draft where Houston Rockets used their 43rd pick overall selection him by trading into second round that same night. After becoming part of Rockets franchise he has been mainly assigned towards G League affiliate Rio Grande Valley Vipers showing great promise through first season averaging 11 points along 8 rebounds plus 1 block per game while also displaying solid guard skills like ball handling and court vision abilities which allow him be able offensive threat regardless position on court.

As 2021 starts Isaiah continues developing himself on G league level hoping find way back onto main roster soon after proving capabilities against professional players eventually making long awaited jump from overseas basketball onto one most challenging stages world can offer: NBA courts

Jersey number: 55
Position: C
Birth date: May 5, 1998
Height: 7'0" (2.13m)
Weight: 250lb (113kg)
College: —
Birthplace: Eugene, OR, USA
Country: Germany
Attended: Zalgiris
Experience: 5 Years

Isaiah Hartenstein Questions & Answers

What position does Isaiah Hartenstein play?

Isaiah Hartenstein plays center-forward for the Oklahoma City Thunder. As of October 6, 2026, Oklahoma City lists him on its roster as No. 55.

How tall is Isaiah Hartenstein?

Isaiah Hartenstein is listed at 7 feet (2.13 meters) and 250 pounds.

When was Isaiah Hartenstein born?

Isaiah Hartenstein was born on May 5, 1998, in Eugene, Oregon.

Which college did Isaiah Hartenstein attend?

Isaiah Hartenstein did not attend an American college. The NBA lists Zalgiris as his last school or club affiliation, and he developed through professional basketball in Europe before entering the NBA.

When was Isaiah Hartenstein drafted?

The Houston Rockets selected Isaiah Hartenstein in the second round, 43rd overall, of the 2017 NBA Draft.

What is Isaiah Hartenstein's playing style?

Isaiah Hartenstein is a mobile interior big man whose game emphasizes rebounding, rim protection, screening and passing from the center position. His NBA profile identifies him as a center-forward, reflecting his ability to contribute beyond traditional low-post duties.

What team does Isaiah Hartenstein play for in 2026?

As of October 6, 2026, Isaiah Hartenstein is with the Oklahoma City Thunder. The NBA reported in 2026 that Oklahoma City re-signed him through the 2028-29 season.