The Celtics, who have won 12 of their last 14 games, are also struggling with an injury to one of their regular players.

Kristaps Porzingis suffered a right heel injury in the first half of Sunday’s 112-98 win over Washington and sat out the second half.

“He’s doing better,” Joe Mazzulla said Tuesday. “He’s in the weight room right now. Let’s do a few shoots and then we’ll see how he feels on a day-to-day basis.”

Porzingis, who averaged 19 points and seven rebounds in seven games for Boston, missed the first month of the season while recovering from offseason surgery on his left foot. He downplayed his latest injury after Sunday’s competition.

“I turned up my heel a little,” he said. “I kept playing. Honestly, it wasn’t anything big. More of a precautionary measure. It was pretty sensitive. I told the medical staff and they just took me out of the game. I don’t think it’s anything big.”

Sam Hauser (back) is also questionable.

Thursday’s game will be the first of two consecutive meetings between the Bulls and Celtics, this one in Boston and Saturday’s in Chicago.

Here is your preview.

When: Thursday, 7:30 p.m

Where: TD Garden, Boston

TV, radio: NBCSB, WROR-FM (105.7)

Line: Boston -14.5. O/U: 243.0.

BULLS

Season balance: 12-15. vs. spread: 13-13, 1 push. Over/Under: 16-11

Last 10 games: 5-5. vs. spread: 5-4, 1 push. Over/Under: 6-4

Celts

Season balance: 21-5. vs. spread: 10-16. Over/Under: 12-13, 1 push

Last 10 games: 8-2. vs. spread: 3-7. Over/Under: 4-6

TEAM STATISTICS

Points per game: Chicago 118.9, Boston 119.9

Points allowed per game: Chicago 121.9, Boston 109.8

Field goal percentage: Chicago .474, Boston .458

Opponent field goal percentage: Chicago .481, Boston .461

3-point percentage: Chicago .378, Boston .372

Opponent’s 3-point percentage: Chicago .344, Boston .350

Statistics of the day: The Celtics lead the NBA with 494 three-pointers made, while the Bulls are second behind the defending champions with 446.

Notes: The Bulls remained competitive, maintaining a record of .500, largely due to their offensive performance, particularly from 3-point range. … Although the Bulls were without leading scorer Zach Lavine (back) in Monday’s win over the Raptors, Chicago made 14 3-pointers. Lavine, who averages 21.7 points per game, is a player frequently mentioned in trade rumors. In a league with huge 3-point shooting variance, the Bulls have shown consistency, hitting at least 10 in 27 consecutive games, a franchise record. … In 27 games with the Bulls, Giddey is averaging 11 points, 6.4 rebounds and 6.9 assists per game. … In the teams’ first meeting this season, Jayson Tatum collected 35 points and 14 rebounds to help Boston to a 138-129 road win in Chicago on November 29th.

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Aiden Sprole can be reached at [email protected].