Official Report
Monty McCutchen was voted one of the best refs in the league by coaches and players in a 2016 LA Times poll. He has been decent in most Celtics games but there have been a couple of games where he has been really bad, the double OT loss to the Warriors last season is one of them. Draymond Green committed his 6th foul and they gave the foul to Curry, who was not even involved in the play. Green then played all of the 4th quarter and two overtimes without getting another foul called on him, although he committed several. Avery Bradley, who was successfully limiting Curry, fouled out on two very questionable calls. The Warriors shot 39 free throws to just 16 for the Celtics.
McCutchen officiated Game 3 of this series and Game 3 of the Bulls series. He is a homer ref with a home W/L record of 48-25. Both teams are 8-2 with McCutchen on the court.
Derrick Stafford is known to be quick to call technical fouls. Pat Riley and Stafford have a bit of bad blood between them. Back in 2003 when Riley was coaching, he accused Stafford of shouting "It's not about you" and some other stuff at Riley when Riley complained excessively about the calls. Stafford was suspended for 2 games as a result. Stafford was also fined as a result of a complaint that Lawrence Frank made when he was coach of the Nets. A ref has to be pretty bad to be suspended or fined for an incident since the league usually feels that they can do no wrong. I found 4 other articles detailing complaints about Stafford for his actions or comments. It seems that Mr Stafford has been a hot head who loves to lash out at players and coaches who question him. Hopefully he has mellowed a bit, but Brad Stevens' calm demeanor should be a benefit when dealing with him.
This is the first game this post season that Stafford is officiating for the Celtics. Washington is 5-5 in their last 10 games with Stafford while the Celtics are 7-3 in their last 10. His home W/L record this season is 39-31.
Zach Zarba called Game 1 against the Wizards.this series. Zarba was the referee who called the last second foul on Smart against the Bulls to give Butler the free throws to win the game. Despite that, he has been mostly good in games vs the Celtics this season, though. Washington is 6-4 with Zarba in their last 10 games while the Celtics are 6-4 in their last 10. His home W/L record this season is 36-33.