OKC wrapped its 2026 NBA Summer League run with a loss to Brooklyn, completing an eight-game slate split between Salt Lake City and Las Vegas. The short stretch gave the Thunder a chance to evaluate its newest assets alongside second-year contributors, providing a snapshot of where the roster stands heading into training camp.
Center Aday Mara entered the league as the No. 12 overall pick and appeared in five Summer League games. At 7-3, his elite size immediately made him a favored pick-and-roll option, and his presence in the post was felt at moments throughout the schedule. While the Thunder did not release a full statistical line for Mara, the limited minutes he saw allowed coaches to observe his footwork, rebounding instincts, and ability to finish around the rim. Those early impressions suggest a player with a high ceiling, but one who will need to develop a reliable mid-range shot and defensive positioning to thrive in a league that increasingly values stretch bigs.
Guard Bennett Stirtz also saw action in the Summer League, though the available data on his performance is sparse. The coaching staff used the games to assess his shooting mechanics and decision-making in transition, especially when he shared the floor with fellow rookie Josh Dix. When Mara and Stirtz were rested, Dix produced his strongest outings, indicating that Stirtz’s role in the rotation was still being defined and that his contributions were modest in the limited opportunities he received.
Undrafted guard Josh Dix signed a two-way contract with OKC and played in seven games. He averaged 8.4 points, 2.7 rebounds and 1.4 assists in 22.7 minutes, shooting 44.9 percent from the field and an impressive 40.6 percent from three-point range. His best performances came when the Thunder rested both Mara and Stirtz, showing that he can step into a scoring role when called upon. However, when he was not the primary shooter, his impact on the game diminished, underscoring the need for a more consistent all-around game if he hopes to secure a standard NBA contract.
Second-year forward Brooks Barnhizer, a 2025 second-round pick, returned for a second Summer League stint, appearing in seven games and posting 11.9 points, 9.6 rebounds, 2.6 assists and a steal per contest while logging 24.7 minutes. He shot 41.1 percent from the field but only 25 percent from three-point range, mirroring his performance from the previous summer. The Thunder still view him as a high-energy glue guy who can protect the rim and rebound, yet his lack of progress as a floor spacer remains a concern.
Overall, the Summer League grades for OKC’s rookies reflect a mix of promise and unfinished business. Mara’s size and pick-and-roll fit give the Thunder a potential cornerstone, but he must broaden his offensive repertoire and tighten his defensive fundamentals. Stirtz’s shooting instincts are evident, yet he needs to demonstrate reliable decision-making and defensive versatility to earn meaningful minutes. Dix and Barnhizer each showed flashes of what they could contribute, but both will need to refine specific aspects of their games before securing regular-season roles. The Thunder’s developmental pipeline is still in a transitional phase, and the next steps, rookie minicamp, preseason, and potential G-League assignments, will determine whether these young players become integral parts of Oklahoma City’s future.
The summer league served as a diagnostic tool rather than a final verdict. The Thunder now have a clearer picture of each rookie’s strengths and the areas that demand growth, setting the stage for a summer of focused improvement and strategic roster decisions.
