Hartenstein will crack the starting lineup in Tuesday's preseason game against Denver.
Hartenstein replaces Alex Caruso in the starting five as head coach Mark Daigneault looks to experiment with different lineups prior to the start of the regular season. Hartenstein has had strong outings in both of his preseason games with the Thunder, including a nine-rebound effort against Houston. While it remains to be seen whether he will start in the regular season, Hartenstein will undoubtedly be a key contributor for Oklahoma City moving forward.