Jayson Tatum Won't Call These Celtics His Team. Philadelphia Will Test Whether They Are.

It rained outside the Auerbach Center on the morning of Celtics media day — a detail Boston's own blog flagged as fitting symbolism for washing away the past. The team spent the offseason doing exactly that.

The headline move came in June: Jaylen Brown to Philadelphia for Paul George and draft compensation, ending a nine-season partnership that had defined the franchise's recent identity. The reception was cold enough that George addressed it directly in September, saying he understood the fan angst and wasn't taking it personally. Tatum has been consistent on his end, telling reporters he loves Brown and remains grateful for what they built, and telling ESPN he's "comfortable" leading the new-look group.

What he wouldn't do is claim it. Asked at media day whether these are now "his" Celtics, Tatum declined the framing, per CelticsBlog. Head coach Joe Mazzulla isn't being nearly as subtle — he's calling this the beginning of a new era.

The roster suggests the front office is betting on volume rather than a second star. Boston opened camp with 21 players, 14 on standard contracts, and 10 returners including Tatum, Derrick White, Sam Hauser, Payton Pritchard, Hugo Gonzalez, Luka Garza and Baylor Scheierman. They're joined by George, Mitchell Robinson, Mike Conley (somehow beginning Year 20) and draft additions Chris Cenac Jr. and Dillon Mitchell. Brad Stevens' framing was depth — strength in numbers.

It's a genuine gamble given the last two seasons. In his last full season, Tatum played 72 games and averaged 26.8 points, 8.7 rebounds and 6.0 assists. Last season he played 16, all crammed into a March–April window, and Boston still went 56-26 and reached the two-seed — before Philadelphia ended their year in seven games. Brown, meanwhile, averaged 28.7 points on 47.7% shooting across 71 games. On paper, Boston swapped a wing in his prime for a veteran one.

The compensating case is real but conditional. George shot 39.2% from three and averaged 17.3 points — in only 37 games. Availability is the entire question with him. Robinson, at 8.9 rebounds and 1.2 blocks in under 20 minutes a night, gives Boston a genuine rim-runner and lob threat it hasn't had. Pritchard (17.0 ppg) and White (16.5 ppg) are proven secondary creators who already carried heavy loads.

Health is already a live variable. The latest power-rating snapshot slots Boston sixth league-wide at plus-5.46 on a neutral floor — down 3.28 points week over week — with 3.48 points docked for absences including Nikola Vučević, Neemias Queta, Hugo Gonzalez, Sam Hauser and Payton Pritchard. That's most of a rotation. For a team whose entire thesis is depth, depth is the first thing that has to hold.

The calendar offers little runway. Boston's first games land Oct. 8 at Cleveland and Oct. 10 at home against Philadelphia — Brown's return to the Garden. Then November arrives: at Orlando, at Houston, home Milwaukee, at Charlotte, at Milwaukee, at Philadelphia, at Toronto, home Dallas, home Orlando, at Denver, at Sacramento. That's the punishing stretch schedule analysts flagged back in August, and it hits before the season is six weeks old.

The market is treating Boston as good but not elite: a win total of 51.5, below last season's 56, with championship odds around +1400 — second tier rather than top.

Boston has an argument that last season proves the system works without a co-star, since they won 56 games with Tatum available for 16 of them. The harder question is whether depth wins in May, when the game slows down and Philadelphia — which split 10 meetings with Boston last season — has the closer.

Tatum may not want to call this team his. Everyone else already will.