"Fire Nico" chants have rained around in Dallas ever since Nico Harrison traded Luka Doncic to the Los Angeles Lakers in the middle of a February night. It's the type of trade that left all Dallas Mavericks fans feeling betrayed,

Dallas Mavericks general manager Nico Harrison made his first big move of the offseason by purging multiple members of the team’s athletic performance staff, including athletic performance director Keith Pelton and head athletic trainer Dionne Calhoun.

Mavericks general manager Nico Harrison is making significant changes to the team’s health and performance group, according to a person with knowledge of the moves. Among them, head athletic trainer Dionne Calhoun and athletic performance director Keith Belton have been relieved of their roles.