Mitchell drove to the rim, jumped up, and put Celtics forward Kristaps Porziņģis on a poster with a highlight jam. The best ...

Celtics' big man Kristaps Porzingis rotated to help and contest Mitchell at the rim. Porzingis jumped and got his arm up, but ...

What was Luke Kornet's reaction to getting posterized in Saturday's win vs. the Mavs? He gave a hilarious explanation to NBC Sports Boston's Abby Chin.

Mitchell drove to the rim, jumped up, and put Celtics forward Kristaps Porziņģis on a poster with a highlight ... the entire building and all of the NBA that he's still a reigning slam-dunk ...