The Celtics could have a shorter bench than usual for Thursday night’s matchup with the Wizards.

Boston added backup wing Sam Hauser to its injury report Wednesday, listing him as questionable for the game in Washington with lower back pain.

Hauser, who emerged last season as one of the NBA’s top 3-point shooters, played 24 minutes in Tuesday night’s season-opening rout of the New York Knicks at TD Garden. The 26-year-old went 4-for-10 from the field and 2-for-7 from three, finishing with 10 points, five rebounds and one assist in the 132-109 win.

A durable reserve, Hauser has played in all but five games for the Celtics since the start of the 2022-23 season. If he can’t go against Washington, second-year pro Jordan Walsh likely would take on a more prominent role in head coach Joe Mazzulla’s rotation.

Walsh, who played sparingly as a rookie, impressed this preseason, seemingly locking down the end-of-the-rotation spot previously occupied by departed free agent Oshae Brissett. The 2023 second-round pick played the final six garbage-time minutes against the Knicks.

Baylor Scheierman and Jaden Springer both did not see action against New York, and two-way players JD Davison, Drew Peterson and Anton Watson did not dress.

The only other player listed on Boston’s injury report was Kristaps Porzingis, who’s expected to miss another month-plus as he works his way back from offseason leg surgery.

Thursday’s game is the season opener for Washington. The Wizards were the NBA’s second-worst team last season, finishing with a record of 15-67.