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Dylan Harper to Make Summer League Debut Saturday vs. Dallas Mavericks Despite Groin Injury

San Antonio Spurs guard Dylan Harper is expected to make his NBA Summer League debut Saturday against the Dallas Mavericks, sources told DallasHoopsJournal.com.

Harper, the No. 2 overall pick in the 2025 NBA Draft, sat out the Spurs’ appearances in the California Classic and their Las Vegas opener. The team has taken a cautious approach to his return, prioritizing long-term health. He has since been cleared to play and will be on a team-managed minutes restriction.

Saturday’s matchup at the Thomas & Mack Center is one of the most anticipated games of the Summer League, featuring a potential first showdown between Harper and top overall pick Cooper Flagg.

Flagg is coming off a gritty debut in the Mavericks’ 87–85 win over the Los Angeles Lakers. He finished with 10 points, six rebounds, four assists, three steals, and one block in 32 minutes. Though Flagg shot just 5-of-21 from the field and missed all five three-point attempts, his impact was felt late. In the final minute, he delivered a key block that led to Ryan Nembhard’s go-ahead three-pointer.

On Thursday, the Spurs opened their Las Vegas schedule with a 111–70 blowout win over the Philadelphia 76ers. David Jones-Garcia led the way with 24 points on 9-of-12 shooting, including 4-of-5 from three, adding five rebounds, three assists, and four steals. Riley Minix and Dexter Dennis each scored 14 points, while Kyle Mangas scored 11. Harrison Ingram contributed seven points, a game-high six rebounds, and four assists.

Tipoff between the Spurs and Mavericks is set for 3 p.m. CT on ESPN.

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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.