NBA Rookie of the Year front-runner Cooper Flagg of the Dallas Mavericks has a left ​midfoot sprain and will be ‌sidelined through All-Star weekend, the team announced Wednesday.

Flagg, 19, sustained the sprain against the Phoenix Suns on Tuesday, with ‌an ​MRI on Wednesday revealing ⁠the injury, the ⁠Mavericks announced.

Per ESPN, the former Duke star is expected to return to the lineup when the Mavericks ​open the second half on Feb. 20 against the Minnesota ⁠Timberwolves in Minneapolis.

Flagg, the ⁠No. 1 overall pick ​in the 2025 NBA Draft, will miss ​Dallas’ Thursday road game against the ‌Los Angeles Lakers and the Rising Stars Game on Friday, part of All-Star weekend in Inglewood, ⁠Calif.

Flagg leads all rookies with an average of 20.4 points per game and also ⁠is ‌producing 6.6 rebounds and 4.1 ⁠assists in 34.1 minutes ​per ‌contest over 49 games this ​season.

His 49-point ⁠performance in a road loss to the Charlotte Hornets on Jan. 29 broke the NBA record for the highest-scoring outing by a teen.

–Field ​Level Media