Celtics Nightly
All teams
Celtics Nightly Desk · transactions · Monday, September 14

Caleb Grill Joins the Boston Celtics

Free agentBoston Celtics
Caleb Grill
G · 26 · rookie
The move
Joins the Celtics
official roster · Sep 14, 2026
2026-27 cap hit
Not on file yet
public salary data lags a signing by a day
Celtics payroll
$201.4M
in the tax · cap $165.0M · tax $200.4M
Roster
21 players
standard limit 15 + 3 two-way
By the Celtics Nightly Desk · 6 h ago

Caleb Grill is now on the Boston Celtics roster, arriving from free agency as a 26-year-old rookie guard. His contract terms are not on file yet, and Boston already carries a payroll of $201.4 million against a $165.0 million cap.

The move

Caleb Grill is on the Boston Celtics roster as of Monday, Sep 14, according to the club's official roster. The 26-year-old guard arrives from free agency, with no NBA line to his name — he enters as a rookie. No report preceded this move; it was picked up straight from the roster itself, with no advance word from a beat writer or insider on the transaction.

The money

Grill's contract is not on file yet; public salary data can lag a signing by a day, so his cap hit and any years are not announced. Boston carries a payroll of $201.4 million across 16 contracts for 2026-27, over the luxury tax line. The cap sits at $165.0 million, the tax at $200.4 million, the first apron at $209.0 million and the second apron at $221.7 million — the Celtics are already spending above the tax threshold before accounting for Grill's deal.

The fit

Grill has no NBA line from last season. He joins a Celtics backcourt led by Derrick White, who averaged 34.1 minutes and 16.5 points last season, and Payton Pritchard, who put up 32.3 minutes and 17.0 points. Anfernee Simons logged 24.5 minutes and 14.2 points in the same guard rotation. Boston's roster now stands at 21 players, above the standard 15-man limit under the three two-way slots the league allows, and Grill will have to carve out minutes behind that established group.

Did a report predict Caleb Grill would join the Celtics?

No report is logged for this move; it was detected directly from the official roster on Monday, Sep 14.

What is Caleb Grill's contract with the Celtics?

Not on file yet. Public salary data can lag a signing by a day, so his cap hit and any years are not announced.

How many players are on the Celtics roster now?

21 players, above the standard 15-man limit, using the three two-way slots the league allows.

By the Celtics Nightly Desk, from the data on this page, rewritten when the data changes. How the desks work.
No contract on file yet: public salary data usually catches up within a day.

Celtics rotation

tracker →
Derrick White34.1 min · 16.5 pts
Jayson Tatum32.6 min · 21.8 pts
Payton Pritchard32.3 min · 17.0 pts
Paul George30.7 min · 17.3 pts
Neemias Queta25.3 min · 10.2 pts
Sam Hauser24.8 min · 9.2 pts

Moves are detected from the official rosters, so the mechanism (trade, signing, waiver claim, two-way conversion) comes from the linked report when there is one. Salary figures are cap hits from public salary data.