NEW YORK, United States — Cooper Flagg, a 19-year-old American forward for the Dallas Mavericks, was voted the 2026 NBA Rookie of the Year, the league announced on Monday (Tuesday Manila time). Flagg, selected by Dallas with the first overall pick in last year's NBA Draft, averaged an NBA rookie-best 21.0 points, 6.7 rebounds, 4.5 assists and 1.2 steals a game this season for the Mavericks, who went 26-56 and missed the playoffs.