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Dallas Mavericks Announce Summer League Roster and Schedule Featuring No. 1 Pick Cooper Flagg

The Dallas Mavericks have officially revealed their full roster and game schedule for the 2025 NBA Summer League in Las Vegas. The headliner: No. 1 overall pick Cooper Flagg, who is set to make his highly anticipated professional debut.

Flagg, the 6-foot-9 forward from Duke, will be joined by a promising group of rookies, returning players, and undrafted free agents aiming to earn training camp invites or two-way contracts. The Mavericks begin Summer League play on July 10 against the Los Angeles Lakers at 7:00 p.m. CT on ESPN.

2025 Dallas Mavericks Summer League Roster

No. Player Pos. Ht. Wt. Birthdate Prior to NBA/Home Country NBA Exp.
5Miles KellyG6-61901/26/03Auburn/USAR
9Ryan NembhardG6-01803/10/03Gonzaga/CanadaR
17Melvin AjinçaF6-82186/26/04LDLC ASVEL/FranceR
27Nolan HickmanG6-21905/7/03Gonzaga/USAR
28Zhuric PhelpsG6-41905/15/02Texas A&M/USAR
32Cooper FlaggF6-920512/21/06Duke/USAR
33Jamarion SharpC7-52358/26/01Ole Miss/USAR
34Aliou DiarraC6-919212/31/01APR/MaliR
35Matthew ClevelandG/F6-72109/15/02Miami/USAR
36Maxwell LewisF6-72157/27/02Pepperdine/USA2
37Jordan HallF6-72151/14/02Saint Joseph’s/USA1
43Matt CrossF6-72302/21/01SMU/USAR
44Obinna Anochili-KillenF6-82209/27/01Marshall/NigeriaR
45Moussa CisséC6-112299/10/02Memphis/GuineaR
46Gabe McGlothanF6-72353/3/99Grand Canyon/USAR
47Jaylin WilliamsF6-82457/26/00Auburn/USAR

Also featured on the roster are rookie guards Ryan Nembhard and Miles Kelly, who recently signed two-way contracts with Dallas. Nembhard, a floor general out of Gonzaga, and Kelly, a dynamic wing from Auburn, provide additional intrigue for a Mavericks team looking to identify depth in its young core.

The frontcourt includes Melvin Ajinça, who returns for his second Summer League with the Mavericks after being selected 51st overall in the 2024 NBA Draft. Other new additions include Nolan Hickman (Gonzaga), Zhuric Phelps (Texas A&M), Jamarion Sharp (Ole Miss), Aliou Diarra (Mali), and Maxwell Lewis (Pepperdine), who played last season with the Lakers before being traded.

The roster also features Matthew Cleveland (Miami), Jordan Hall (Saint Joseph’s), Matt Cross (SMU), Obinna Anochili-Killen (Marshall), Moussa Cissé (Guinea), Gabe McGlothan (Grand Canyon), and Jaylin Williams (Auburn). Several players have G League or overseas experience and bring versatility to the lineup.

Dallas assistant coach Josh Broghamer will serve as Summer League head coach. Broghamer, now entering his third season with the Mavericks, previously held player development and scouting roles with the Cleveland Cavaliers and Milwaukee Bucks.

2025 Dallas Mavericks Summer League Schedule

Game Date Opponent Time (Central) Venue TV
1 Thursday, July 10 vs. L.A. Lakers 7:00 p.m. Thomas & Mack Center ESPN
2 Saturday, July 12 @ San Antonio Spurs 3:00 p.m. Thomas & Mack Center ESPN
3 Monday, July 14 vs. Charlotte Hornets 5:30 p.m. Thomas & Mack Center NBA TV
4 Wednesday, July 16 @ Philadelphia 76ers 7:00 p.m. Thomas & Mack Center ESPN
5 TBD TBD TBD Thomas & Mack Center TBD

Based on the results of the first four contests, a fifth game will be scheduled. All games will be played at the Thomas & Mack Center or Cox Pavilion on the UNLV campus.

With Cooper Flagg making his debut and several intriguing young prospects competing for roles, Dallas is expected to be one of the most-watched teams during this year’s Summer League.

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Grant Afseth

Grant Afseth

Senior Writer
is a Senior Writer for Dallas Hoops Journal and a lead contributor to Roundtable.io. With over a decade of experience as a credentialed journalist, Afseth provides elite tactical analysis and front-office strategy for the Mavericks, Wings, and Texas basketball. His reporting is featured across national platforms including Newsweek, RG.org, Hoops Rumors, and Athlon Sports. A primary source for the basketball community, his work is frequently cited by Wikipedia, RealGM, and Basketball-Reference. He previously served as a Mavericks and NBA reporter for Sports Illustrated's FanNation and Rockets/OnSI, as well as Ballislife, Heavy Sports, ClutchPoints, and NBA Analysis Network. During the Mavericks' 2024 NBA Finals run and the pivotal 2025 offseason—featuring his lead reporting on the Luka Dončić-Anthony Davis trade—he served as a featured insider for The Texas Standard and BBC Sport Radio. Afseth is a regular guest on Fox 4 Dallas and 105.3 The Fan. He previously reported for the Kokomo Tribune and Winsidr. Follow his real-time reporting on X @GrantAfseth.