Jayson Tatum Says He Feels 'Explosive' Again — the Celtics' Whole Season Hinges on It

The loudest story out of Boston this week isn't the trade that rocked the franchise in July. It's the body of the guy who stayed.

At Celtics media day and through the first days of a training camp staged in Charleston, South Carolina — the team's first road camp in nearly a decade — Jayson Tatum has been the headliner, and for once the news is purely physical. Now 16½ months removed from the Achilles rupture he suffered at Madison Square Garden, Tatum told reporters he "feels great," describing himself as significantly more confident both mentally and physically heading into 2026-27. The word "explosive" made the rounds.

That matters more than any depth-chart note, because Boston never actually got a healthy Tatum last season. He returned less than a year after surgery and appeared in just 16 games, averaging 21.8 points, 10.0 rebounds and 5.3 assists in 32.6 minutes — but on 41.1 percent shooting and 32.9 percent from three. Those are well below his career starter baseline of 23.6 points, 7.5 rebounds and 4.1 assists on 45.5 percent shooting. The Celtics got a version of Tatum last year. They may get the real one now.

A roster built around him, whether he says so or not

The supporting cast looks nothing like it did. Jaylen Brown was dealt to Philadelphia on July 1 for Paul George and draft compensation, a blockbuster Brown later said featured disappointing communication from Boston and a "crazy transition." George arrived to a frosty reception from the fanbase and shrugged it off — "it's fair" — while positioning himself as a secondary scorer who can play off a superstar wing.

Tatum, notably, declined to call this "his team" at media day, even with Brown gone and Joe Mazzulla labeling the season the start of a "new era." Actions said otherwise: Tatum organized a week-long players-only workout in Los Angeles over the summer, George included, and teammates have publicly praised his leadership leap. On a roster with this much turnover, that's the chemistry work that matters most.

Up front, the Celtics signed Mitchell Robinson away from the champion Knicks to shore up center depth. He posted 8.9 rebounds and 1.2 blocks in just 19.6 minutes per game last season while shooting 71.2 percent from the floor — though his 40.8 percent foul line is a known liability he says he's addressing. He'll push Neemias Queta, who quietly averaged 10.2 points, 8.4 boards and 1.3 blocks across 76 games in a breakout year. Mike Conley adds veteran guard insurance.

What it all means for the season

Last year's Celtics went 56-26 with a plus-7.7 point differential and 114.9 points per game, and still exited early enough to leave a sour taste. The market sees a step back: Boston carries a 51.5 win total and sits at +1400 to win the title — fifth-best, behind Oklahoma City and San Antonio (both +260), Philadelphia (+850) and the Knicks (+900). A healthier Tatum is the single biggest argument that the market is underestimating Boston; a loaded Eastern Conference is the single biggest argument that it isn't.

Mazzulla isn't letting the good camp vibes linger, either. He's already warned his team about the gap between October optimism and the adversity that defines a season.

The schedule offers an early measuring stick. Boston opens the preseason Oct. 8 at Cleveland, then plays Philadelphia twice (Oct. 10 at home, Oct. 16 on the road) — meaning Brown's first potential return to TD Garden comes before the games count. The regular season begins Oct. 20 at Detroit, with the home opener Oct. 23 against the defending champion Knicks.

If Tatum is anywhere near his career form, Boston has a top-five player piloting a retooled roster, and that ceiling is real. If the Achilles still caps him, the East's depth won't be forgiving. Either way, this week made one thing clear: the Celtics' season runs through one surgically repaired heel.