DALLAS — Nico Harrison is no longer the general manager and president of basketball operations for the Dallas Mavericks.

The Mavericks fired Harrison Tuesday morning, the team announced, after four seasons, one NBA Finals appearance and one franchise-altering trade.

The move came a day after Monday’s riveting loss to the Milwaukee Bucks.

Dallas is in the midst of a disappointing 3-8 season and has lost five of its last six games, dimming championship expectations Harrison set.

The Mavericks have handed the task of running the franchise to vice president of basketball operations Michael Finley and assistant general manager Matt Riccardi on an interim basis, naming them co-interim general managers who will oversee basketball operations..

“This decision reflects our continued commitment

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