This was bad news for Kristaps Porziņģis. Donovan Mitchell put Porziņģis on a poster with a power slam over the 7-2 center early Tuesday to ignite the Cleveland home crowd in a matchup against the Boston Celtics.

Mitchell drove to the rim, jumped up, and put Celtics forward Kristaps Porziņģis on a poster with a highlight jam. The best part of this play was watching Mitchell's Cavaliers teammates react to the dunk.

Mitchell's dunk over Kristaps Porzingis failed to set the tone for the Cavaliers, who fell at home to the Celtics.

Donovan Mitchell just threw down one of the biggest dunks in years for the Cavs during Tuesday night's game against the Celtics.