Tracking the Dallas Mavericks’ 2025 Summer League Roster Featuring Cooper Flagg

Grant AfsethJune 28, 2025June 28, 2025no comment

Dallas Mavericks

As the Dallas Mavericks prepare for the 2025 Las Vegas Summer League, the franchise has begun to assemble its roster around No. 1 overall pick Cooper Flagg. While Flagg’s debut will command the national spotlight, Dallas surrounds him with developmental prospects under a mix of contract structures.

As previously reported by DallasHoopsJournal.com, assistant coach Josh Broghammer will serve as the Mavericks’ head coach during Summer League in Las Vegas.

DallasHoopsJournal.com has confirmed the following players are part of the Mavericks’ Summer League roster:

Cooper Flagg (Duke) — Standard Contract (No. 1 Overall Pick)

Position: Forward
2024–25 Stats: 19.2 PPG, 7.5 RPG, 4.2 APG, 1.4 SPG, 1.4 BPG, 35.0 MPG
Notable: The consensus No. 1 pick in the 2025 NBA Draft. Flagg’s all-around skill set and two-way versatility made him the centerpiece of Duke’s NCAA Tournament run. He is expected to be the focal point of the Mavericks’ Summer League squad and long-term plans.

Ryan Nembhard (Gonzaga) — Two-Way Contract

Position: Guard
2024–25 Stats: 10.5 PPG, 3.0 RPG, 9.8 APG, 44.6 FG%, 40.0 3PT%, 35.1 MPG
Notable: Led the NCAA with 9.8 assists per game and broke Gonzaga and WCC single-season assist records (344). A cerebral playmaker and perimeter shooter, Nembhard signed a two-way deal after going undrafted.

Miles Kelly (Auburn) — Two-Way Contract

Position: Guard
2024–25 Stats: 11.3 PPG, 3.7 RPG, 1.1 APG, 40.6 FG%, 37.8 3PT%, 90.9 FT%, 28.3 MPG
Notable: Streaky scorer with a quick trigger from deep. Notched 23 points in Auburn’s NCAA Tournament opener. Signed to a two-way deal with Dallas after a strong senior year.

Moussa Cissé (Memphis) — Exhibit 10 Contract

Position: Center
2024–25 Stats: 5.7 PPG, 6.5 RPG, 1.6 BPG, 54.8 FG%, 18.2 MPG
Notable: A five-year NCAA veteran known for his shot-blocking and rebounding. Cissé is set to participate at Summer League on an Exhibit 10 deal with hopes of earning a two-way contract.

Obinna Anochili-Killen (Marshall) — Summer League Invite

Position: Forward
2024–25 Stats: 14.4 PPG, 5.7 RPG, 3.2 BPG, 54.8 FG%, 32.8 3PT%, 26.3 MPG
Notable: A skilled inside-out scorer and shot-blocker with consistent production. Anochili-Killen will look to translate his mid-major success into a G League or two-way opportunity.

Matt Cross (SMU) — Summer League Invite

Position: Forward
2024–25 Stats: 11.8 PPG, 7.6 RPG, 1.7 APG, 1.2 SPG, 48.5 FG%, 38.2 3PT%, 29.4 MPG
Notable: One of SMU’s most reliable players with six double-doubles on the season. Brings versatility, rebounding, and efficient shooting to the Summer League roster.

Matthew Cleveland (Miami) — Exhibit 10 Contract

Position: Guard/Wing
2024–25 Stats (Miami): 17.6 PPG, 4.4 RPG, 1.7 APG, 51.1 FG%, 38.2 3PT%, 77.6 FT%, 30.3 MPG
Notable: Former five-star recruit and ACC Sixth Man of the Year. Led Miami in scoring during a turbulent senior season and set a school record with seven straight 20-point games. A high-upside Exhibit 10 signing who will be watched closely for his shooting, adaptability, and defensive improvement.

More updates will follow as the Mavericks finalize their full roster for Las Vegas. Cooper Flagg is set to debut on July 10 against the Los Angeles Lakers at 7 p.m. CT on ESPN.

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Grant Afseth

Senior Writer

Grant Afseth is a Senior Writer for DallasHoopsJournal.com, where he leads in-depth coverage of the Mavericks, Wings, and more. Between a focus on the latest news, closer looks at games, front office strategy, and more, Afseth provides objective coverage. Afseth contributes broader NBA coverage across platforms and has been cited in national outlets for his reporting and analysis. With nearly a decade of journalism experience, Afseth has covered the NBA and WNBA for multiple major outlets, including Athlon Sports, BallIsLife, Sportskeeda, and RG.org. He previously reported on the Indiana Pacers for CNHI’s Kokomo Tribune and the Mavericks for FanNation.

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