The Celtics didn't sweep their playoff series against the Heat. Nor did they sweep their playoff series against the Cavaliers. I don't see them doing it again against the Mavericks, who have come close in the past two games despite making only 15 of 51 shots from beyond the arc for 29.4 percent during this time span. 

The open looks for Dallas have been there. The Mavericks just haven't converted. The Celtics are the superior team, but that edge is negated by the Mavericks at home in must-win mode and Kristaps Porzingis unlikely to play, or not be at 100 percent if he does. 

Luka Doncic is a superstar. But he's also thuggish and a whiny crybaby always griping and gesturing about calls he thinks he's not getting. It's disgusting to watch someone that talented sink that low. However, he's likely to get the benefit of the doubt in this Game 4 after he fouled out of the last game. 

Kyrie Irving should have his confidence back after scoring 35 points in Wednesday's Game 3. 

The last time there was a championship series sweep in the NBA was 2018 when the Warriors took out a decimated Cavaliers team. Before that you have to go back to 2007 when the Spurs swept the Cavaliers. It's just not that common. There's too much pride at stake. 

The Mavericks are the healthier team with Porzingis probably out. This is their game to win.