Dallas Mavericks GM Nico Harrison has abruptly dismissed athletic performance director Keith Belton alongside head athletic trainer Dionne Calhoun in a surprise shakeup of the team’s health staff. Belton—hired just last summer despite lacking the NBA’s required NSCA certifications—was also involved in a heated dispute with another staff member that prompted an HR investigation. In this video, Marcel Martin explores the reasons behind Belton’s firing, the fallout for Dallas’s medical operations, and what the Mavericks must do to rebuild trust in their performance department

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