Jaylen Brown Is Already Facing A New Test After Boston

Jaylen Brown navigates the complexities of transitioning from the Celtics to the 76ers, as he adjusts to new teammates and systems under Coach Nick Nurse.

Jaylen Brown is facing a different kind of challenge this fall, and it has nothing to do with shot selection or scoring load. After more than three months since the trade that sent him from the Boston Celtics to the Philadelphia 76ers, Brown is finally getting his first real stretch of work with his new staff and teammates during training camp - and the learning curve has been immediate.

“It’s a whole new system, whole new calls,” Brown said. “I got to like download my brain to a different algorithm to make sure I’m not calling the wrong stuff because the names are different.

“Some of the terminology, they use the same words, but it's a whole different coverage.”

That’s the reality of leaving one basketball world for another. Brown came into the league as the No. 3 pick in the 2016 NBA Draft and spent his entire career in Boston before this move, which means the 2026-27 season will be the first time he suits up in anything other than Celtics green. He’s already worked under three different coaches in Boston - Brad Stevens, Ime Udoka and Joe Mazzulla - but this is the first time he’s had to absorb a completely new organization, a new playbook and a new language on the fly.

For Brown, that means learning how to mesh with a brand-new group while getting comfortable in Nick Nurse’s system. The clock is ticking, but he does have some breathing room. Philadelphia opens the regular season on Oct. 20 at Madison Square Garden against the defending champion Knicks, giving Brown roughly three weeks from the start of camp to get everything locked in before the games start counting.

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