Celtics Notes: Training Camp, Scheierman, Tatum, Cassell

The Celtics are getting an early challenge from head coach Joe Mazzulla as they begin the defense of their NBA title, writes Brian Robb of MassLive. Boston and Denver opened training camps this week in preparation for their games next Friday and Sunday in Abu Dhabi, and Jaylen Brown said the first practices have been intense.

“Training camp has been hard,” he said. “Training camp has been a lot of conditioning, a lot of defensive stuff, setting the tone on the defensive end, pushing ourselves. It’s been great. It’s exactly what we needed. We did not ease into training camp by no means. Joe Mazzulla is a psycho in a good way.”

It was a very short offseason for the Celtics, who closed out the NBA Finals a little more than three and a half months ago. It was even shorter for Jayson Tatum, Jrue Holiday and Derrick White, who were part of Team USA in the Summer Olympics. Despite the brief break, the players seem ready to get back to business.

“I think it’s very, very mental,” Holiday said. “Obviously that’s where most of the game can be won. Concentration, doing things while you’re tired, playing without passing, playing without scoring. How do you win the mental game, I feel like, is the biggest part – if you’re tired physically or mentally. Again, he’s just throwing everything at us.”

There’s more from Boston:

• The Celtics ordered Baylor Scheierman to add weight as he prepares for his first NBA season, Robb adds in a separate story. Scheierman reported to camp about 10-15 pounds heavier than he was in July. “I think from Summer League to now I spent a lot of time on my body, working on my body, trying to put on a lot of lean mass,” Scheierman said. “… Also just working on my shot, continuing to tune up things, try to get it off quicker.”
• As Tatum predicted at media day, Mazzulla is hoping he’ll take extra motivation from not being named MVP of the Eastern Conference Finals or NBA Finals and then being benched for much of the Olympics, per Adam Himmelsbach of The Boston Globe. “I don’t think we’ve seen the best of him yet, because of how much he works and how he’s willing to grow,” Mazzulla said. “So I thought it was great that he has something to work toward. Sometimes when you get success you don’t have that next hunger right in front of you. Sometimes you’ve got to wait for it. Sometimes it’s a loss; sometimes it’s a losing streak. He was able to get that right in front of him.”
• Assistant coach Sam Cassell has experience in defending an NBA championship, Himmelsbach adds. Cassell was part of the Rockets team that won back-to-back titles in 1994 and 1995. “I can tell you no one here is talking about repeating or trying to defend anything,” Cassell said. “It’s just a new year and a new season. We just want to go win a championship every year.”