The scoreboard shows the Heat up 1-0 in this series after winning Game 1 in overtime.But I'm convinced the Celtics are the better team. 
I understand the Heat won Game 1. But the oddsmaker agrees with me as the Celtics are slightly larger favorites than they were in the opening game. 
Boston should have won Game 1 owning at least a two-possession lead for nearly the entire game. But the Celtics blew a 12-point fourth quarter lead and let the game slip away. 
The Celtics own the matchup edges. Miami's defense isn't as good as the Raptors, who the Celtics beat in the previous series. The Heat lack the defensive quickness to stay with Jayson Tatum, Kemba Walker and Jaylon Brown. And offensively, Jimmy Butler is really the Heat's only consistent scoring weapon. 
I certainly don't expect Jae Crowder to score 22 points on 7-of-11 shooting, including 5-of-9 from 3-point range, to come up that big again in Game 2 as he did in the opener. He averaged 10.5 points during the regular season. 
Walker needs to play better and the Celtics' transition defense needs to be turned up a notch like it was against the Raptors. Those shouldn't areas should not be difficult to fix.