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Miami Heat at Boston Celtics Betting Preview (January 15, 2026) cover image

Full game betting odds and information for Thursday night’s game between the Boston Celtics and Miami Heat.

I expect a big game from Jaylen Brown on Thursday night in Miami

Unless you live under a rock, you know that Jaylen Brown sounded off on the refs on Saturday night at TD Garden after his team lost a hard-fought battle with the Spurs (27-13).

He made his point heard loud and clear in the postgame press scrum, and he followed that up with a tweet daring the league to fine him.

They did, and he spoke about it on Wednesday after practice in Miami (21-19).

He didn’t back down from his stance, and instead explained why he used his pulpit to say what he said.

With Brown missing Monday’s loss against the Pacers (9-32) with back spasms, on top of the lingering drama around his $35,000 fine, the MVP-candidate is primed for a big game in Miami.

That’s the type of player is.

After voicing his frustration with being snubbed for Eastern Conference Player of the Month in December, he immediately followed that up with his best individual performance of the season in a win over the Clippers (17-23).

The over/under on Brown’s points for Thursday is currently sitting at 29.5. That’s right at his average for the season, good for sixth in the NBA in scoring.

Look for him to blow past this en route to the Celtics getting back on track on Thursday night at Kaseya Center.

Give me Brown’s over on points, and give me the Celtics both on the moneyline and against the spread.

Betting Odds for Celtics vs. Heat  - January 15, 2026 (Full Game)

Spread: Celtics -2 (-116), Heat +3 (-110)
Moneyline: Celtics -138, Heat +125
Total: Over 233.5 (-108), Under 234 (-110)

Best number in each market via OddsTrader, which aggregates all the odds from every sportsbook to give you the best options to choose from.

Dec 19, 2025; Boston, Massachusetts, USA; Boston Celtics guard Jaylen Brown (7) drives to the basket against Miami Heat forward Jaime Jaquez Jr. (11) in the second half at TD Garden. (David Butler II/Imagn Images)Dec 19, 2025; Boston, Massachusetts, USA; Boston Celtics guard Jaylen Brown (7) drives to the basket against Miami Heat forward Jaime Jaquez Jr. (11) in the second half at TD Garden. (David Butler II/Imagn Images)

Missed any of Monday night’s loss to Indiana? Here were some takeaways:

1. Shooting Gap Was Real, Yet Nearly Survivable:

The Celtics got the looks they wanted. They just didn’t get the results.

Boston shot 9 for 35 from beyond the arc (25.7%), while Indiana converted 16 of 37 (43.2%).

That difference alone typically determines outcomes, yet the Celtics were in contention late by dominating elsewhere.

Boston owned the paint (54-38) and dominated second-chance points (16-6). They defended persistently and rebounded forcefully. They created offense beyond jump shots.

Achieving all this without Brown made the loss more painful. Boston would have won if even a few extra open threes had fallen.

2. Payton Pritchard Continues Answering The Call:

The Celtics are now 2-1 in games Jaylen Brown has missed this season, and Pritchard has been central to all of them.

He led Boston with 23 points and 8 assists, including 11 in the third quarter as the Celtics dug out after Indiana’s 20-4 run. His offense keeps Boston afloat without their top scorer.

Even in defeat, this was another reminder:

Pritchard isn’t just logging minutes, he’s shaping stretches of games.

3. Wing Rotation Remains Unsettled:

With Brown out and Sam Hauser sidelined, Boston again shuffled its wings.

Baylor Scheierman, typically not in the starting lineup, got his first start of the season at the wing position. He played 20 minutes but contributed just 2 points. That’s a far cry from the performance he gave on Saturday night in a loss to the Spurs.

Jordan Walsh, also playing on the wing, made a bigger impact with 6 points and 9 rebounds and finished the game alongside the starters.

Hugo Gonzalez, another wing, continued to see meaningful minutes.

This isn’t a criticism as much as an observation:

The Celtics are still searching for consistency among their backup wings. That stability is needed more when injuries force rotation changes - and right now, that’s the case.

4. Timing Of This Skid Matters:

Last week, the Celtics surged into the No. 2 spot in the East.

Now, they’ve dropped three of their last four, all tight games decided late against Denver (26-13), San Antonio, and Indiana. None were blowouts. All exposed thin margins when offense stalls and stars are missing.

And it doesn’t get easier.

Boston is in the midst of a four-game road swing, with Miami tonight, followed by Atlanta (20-22) and East-leading Detroit (28-10). This stretch will challenge depth, execution, and Boston’s ability to regain stability without pressing.

Monday’s loss wasn’t alarming.

But it was revealing.

As the Celtics move forward, these are the types of games where health, shooting variance, and role clarity will become critical - and where tightening up could make all the difference before close losses turn into something more concerning.

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Tom Carroll is a contributor for Roundtable, with boots-on-the-ground coverage of all things Boston sports. He's a senior digital content producer for WEEI.com, and a native of Lincoln, RI.