Chris Cenac Jr. and Dillon Mitchell have walked into a setup that looks made for first-year growth.
The Celtics didn’t waste any time giving their rookies direction. On the day Cenac and Mitchell arrived in Boston, the organization put a plan in motion, and that work has carried over since Summer League. For both players, the early months have become a foundation-building stretch, with Boston’s player development program already doing its job.
For Cenac, the focus has stayed on the same traits that showed up in Las Vegas. Mitchell’s path is more straightforward: keep sharpening the jumper. And by all signs, that work is already paying off.
At training camp on Friday, Boston’s first-round pick pointed to three-point shooting and shot blocking as the two areas that could define his game. The Celtics like the way his shot looks, and they have not made any major changes to his mechanics. That gives them a clean runway to build the skill rather than rebuild it.
Defensively, Cenac brings real tools. He’s a mobile six-foot-11 stretch-four/center with a 7'5" wingspan and massive hands, and the shot-blocking upside is obvious.
Weak-side rim protection could become a major part of his value. In Las Vegas, his head coach Amile Jefferson put it simply: Cenac oozes potential.
Mitchell’s story has a different feel, but the same developmental thread runs through it. On Friday at the Auerbach Center, the former St. John’s standout made it clear he never seriously weighed a return to college for a fifth season.
"None. Not really," conveyed Mitchell.
"I'm here. I've worked hard to get here.
Just the development side of it, I thought, just the few months I've had here was enough for me. I want to be here.
Like I said, I've worked hard to get here. So it was an easy decision."
That decision has kept him in the Celtics’ system, where the work on his shot has continued. One key adjustment has been releasing the ball on the way up, and that change showed up at Summer League. After making one three in his final college season, Mitchell knocked down 3/8 attempts in Las Vegas.
The six-foot-eight wing is also spending time learning Boston’s concepts and getting comfortable with the speed the team wants to play with. That part should suit him. His athleticism jumps off the floor no matter who is around him, and with the Celtics projected to play faster, the fit makes sense.
Boston’s 2026 draft class also got valuable time this summer with Jayson Tatum and Paul George. Mitchell said it was great to watch how both players handle their daily work. He also appreciated the chance to defend them, a natural challenge for someone who was one of the NCAA’s best perimeter defenders.
Cenac has been learning from veteran big men as well. He said he has been picking the brains of Neemias Queta and Mitchell Robinson, with conversations centered on how physically they play, how they run the floor, and how they rebound. Robinson, in particular, has been a model on the glass, since he is the best offensive rebounder in the NBA since he arrived.
For Boston, that mix of structured development and veteran influence is exactly the kind of environment these rookies need. Cenac and Mitchell are getting coaching, repetition, and firsthand lessons from players who can show them what the next level looks like.
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