Celtics' lineups without Jayson Tatum: Three combos that could steady the ship in 2026-27

The Celtics' Opening Night puzzle just got a lot more interesting

A simple question on X sparked a bigger conversation this week: what will the Celtics' Opening Night starting 5 actually look like heading into 2026-27? Does Payton Pritchard come off the bench again? Does Neemias Queta beat out Mitchell Robinson for the starting center job? Is there room for one of Boston's young wings to crack the first unit early?

Some things aren't up for debate. Derrick White, Jayson Tatum and Paul George are locks in every projection, and pretty much every version of the Celtics' lineup revolves around one central question: how does this group best set up Tatum to run the show?

The real question: what happens when Tatum sits?

That's the more pressing issue for Boston right now. Tatum was brought back gradually last season, logging just 32.6 minutes per game in his regular-season return his lowest average since 2018-19. His minutes climbed back up to 36 per game across six postseason contests, matching his typical workload from the previous five seasons.

This time last year, the Celtics had no choice but to lean on Jaylen Brown and a roster full of unproven pieces during Tatum's absence. That's no longer the case. With a deeper, more experienced roster and a few new additions, Boston now has legitimate options to keep the ship steady or even win minutes outright whenever its star forward needs a breather.

Using Basketball Index's Lineup Analyzer, which projects stabilized data across lineups of different sample sizes, here's a look at three non-Tatum combinations that could give the Celtics real two-way value.

Option 1: Pritchard-Harper Jr.-Hauser-George-Robinson

Whether or not Pritchard starts on Opening Night, expect him to be a major factor whenever Tatum is off the floor. From his garbage-time highlight days to his Sixth Man of the Year campaign, Pritchard has never backed away from running an offense — and this lineup lets him do exactly that.

There's a Pritchard-Robinson pick-and-roll to lean on, plenty of drive-and-kick opportunities to Boston's shooters, and isolation reps for George. It might be as close to peak non-Tatum Celtics as it gets offensively.

The second guard spot could just as easily go to Baylor Scheierman or Hugo Gonzalez, but Ron Harper Jr.'s combination of strength and a 7'1.25" wingspan gives this group extra help defending drives and paint touches. The Lineup Analyzer loves the offensive upside here, though its projected 114.4 defensive rating puts it firmly in the middle of the pack — for context, that same number would've ranked Golden State 16th in the league defensively last season.

Option 2: White-Gonzalez-Walsh-George-Robinson defensive nirvana with a scoring twist

This is the lineup that should make opposing offenses miserable. Three elite screen-navigators including arguably the best shot-blocking guard in the game in White collapsing the paint in unison, forcing bad passes and frustrated body language on the other end. No Tatum, sure, but plenty of chaos for opponents to deal with.

The intrigue here is offensive, too. This lineup hands the keys to Paul George as a temporary go-to scorer. Last season, George posted a strong 1.03 points per possession on isolation plays with a 52.6% effective field-goal rate, ranking 11th in the league in isolation frequency. As a pick-and-roll ballhandler, he was even better 1.18 PPP on a 61% eFG. Even at 36 and with an extensive injury history, George can still get buckets at a high level.

Surround him with a reliable roller, an off-ball threat in White, and two catch-and-shoot/cutting weapons in Gonzalez and Walsh, and the offense has real juice. In fact, the Lineup Analyzer projects a 125.54 offensive rating for this group the highest of the three lineups examined suggesting a bounce-back shooting season for White and an even more efficient George-run offense than expected.

Option 3: Conley-Harper Jr.-Scheierman-Hauser-Queta steady hands and untapped upside

With three capable ball-handlers and four reliable shooters, this lineup pairs veteran stability with growth opportunities for Boston's younger pieces. Mike Conley remains a question mark in terms of minutes entering his 20th NBA season likely fewer than the career-low 18.4 minutes per game he averaged in Minnesota last year but his value as a true table-setter, low-turnover playmaker and elite pick-and-roll reader hasn't disappeared.

This grouping also opens the door for Harper Jr. to create off the dribble, something he did frequently in the G League with Maine before settling into more of a 3-and-D role in Boston. Scheierman, meanwhile, looked increasingly comfortable as a connector during his sophomore season, earning a bigger role thanks to his defensive effort and rebounding.

It leans more offensive than defensive, relying on Queta to clean up the glass, but it's a natural avenue to keep developing Harper Jr. and Scheierman's ceilings as opportunities open up. The Lineup Analyzer is modest on this combination overall — nothing flashy, but a reasonable floor-raiser.

Depth that changes the math for Boston

None of this is about replacing Tatum nothing does that. But the Celtics enter 2026-27 with something they didn't fully have a year ago: legitimate options to survive, and possibly thrive, in his absence. Two starting spots and the bulk of the bench rotation will likely get sorted out in training camp, but names like Pritchard, Scheierman and Gonzalez are all firmly in the mix to matter.

With White and George locked in as constants next to Tatum, and a deep bench capable of running multiple identities offense-first, defense-first, or somewhere in between Boston looks built to weather whatever minutes management looks like this season.

What to watch for next

Training camp will start filling in the blanks on Boston's rotation but the real test comes once the games start counting and we see which of these combinations Joe Mazzulla trusts most when Tatum takes a seat.