Celtics Just Handed A Familiar Voice A Huge Summer League Test

With a focus on building trust and fostering growth, Amile Jefferson steps up as the new Summer League head coach for the Boston Celtics, ready to lead both rookies and returning players.

Near the end of the season, Joe Mazzulla pulled Amile Jefferson aside and let him know he would be the Boston Celtics’ next Summer League head coach. For Jefferson, it was more than a new title. It was a chance to get behind the wheel, test ideas, and keep building as a coach in the exact setting where Boston has helped other staffers take the next step.

Jefferson said he leaned on Matt Reynolds, D.J. MacLeay, and Tony Dobbins for guidance before heading to Las Vegas. Their advice was simple, and it fit the moment.

"The best advice I got from them is just like enjoy it, do what you want, experiment, try things, make it digestible for the guys, but make them have to learn something," said Jefferson after his team's first practice in Sin City. "Those three guys have been super helpful for me, not only for Summer League but [for] my entire coaching career."

That mindset matches the way Jefferson talks about coaching. He is loud by his own description, comfortable communicating, and naturally wired to connect with people.

For him, the job begins with trust. Players have to know the coach cares about them beyond the court, and that the coach can tell who needs a push, who needs a word, and who needs something different altogether.

"The cool thing for me is, almost every guy on our roster, I've seen or interacted with, either as a player, either as a coach, recruiting them, or seeing them during a pre-draft workout, so we have already built a relationship," conveyed Jefferson, a day before he'll have the reins for his first Summer League game in the A chair when the Celtics face the Toronto Raptors at Cox Pavilion at 9 PM ET. "So, whether I'm yelling at them, hugging them, or kicking them in the butt because they did something I didn't like, for me, it's about the relationship."

Jefferson also understands the pressure that comes with Las Vegas. He played in Summer League himself, so he knows some of the players are trying to keep careers alive and make the most of a short window. That perspective gives him a useful edge as he takes over a group trying to prove itself while he continues to climb in the profession.

Friday will also mark the first professional game for Chris Cenac Jr., the Celtics’ first-round pick at No. 27 overall in this year’s NBA Draft. Boston took the power forward and center from the University of Houston, and Brad Stevens later pointed to Cenac’s raw talent, motor, and the way he handled Kelvin Sampson’s demanding program as reasons the organization believed in him.

Jefferson has already seen some of that up close. He said Cenac has stood out for his willingness to do whatever the team asks, and he also noticed the rookie’s huge hands and mobility during the lead-up to Summer League. At nearly seven feet, with a 7'5" wingspan and a 9'0.5" standing reach, Cenac brings the kind of frame that can change games on the defensive end if everything comes together.

Jefferson has also seen growth from Cenac since he entered the pro ranks, and that fits the Celtics’ approach to personnel. Boston places a premium on character, and Cenac’s response to being challenged at Houston clearly mattered. The mix of tools and intangibles that made him a first-round pick will get its first NBA-stage look on Friday, with Jefferson guiding the bench and Cenac stepping into the spotlight.

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