Mazzulla knows this breakneck practice pace might not be enjoyable for his players, but he’s been pleased with their buy-in thus far. The Celtics returned nearly their entire roster this offseason, so the vast majority of their current players are familiar with Mazzulla’s methods.

Jaylen Brown is entering the ninth training camp of his NBA career with the Celtics and the All-Star guard is riding high off a dominant championship run. With so many players returning from Boston’s roster (13) along with an early start to camp,

According to Hauser, after Mazzulla unveils an unusual drill, the Celtics players will sometimes ask themselves what just happened. But judging by how they dominated their way to last season’s title, they trust Mazzulla and buy into his quirks.