Dallas Mavericks rookie Cooper Flagg drained his first NBA 3-pointer Friday night and followed it with the kind of all-around hustle that has this building buzzing, even though the Washington Wizards held a 76-65 lead midway through the third quarter. Expand Tweet

The 18-year-old forward pulled up and splashed a triple that briefly injected life into a Mavericks offense that’s still trying to find its footing after Wednesday’s rough opener . Flagg didn’t just chase scoring; he set up teammates, ran the floor, and came away with a stat line that reflected a rookie handling bigger responsibilities: 7 points, 3 rebounds, and 4 assists in 21 minutes. Article Continues Below

Washington hasn’t made it easy. Kyshawn George paced the Wizards with 26 points, and the visitors were s

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