What began as a routine matchup for the Boston Celtics against the Detroit Pistons quickly changed tone when Sam Hauser abruptly made his way to the locker room with 9:47 left in the second quarter.

There was no collision, no dramatic fall, yet the reaction was enough to spark widespread concern. For a player as composed as the 28-year-old forward, any sign of discomfort stands out.

Hauser had called for a timeout by looking back at the Celtics bench and then walked into the tunnel with trainer Drew Moore.

Not long after, the Celtics addressed the situation publicly. The team shared an update on social media, revealing that Hauser is questionable to return due to an ankle injury.

The designation offered some clarity but also created new uncertainty, and for now, the severity of his injury remains undetermined.

Until the moment he exited, Hauser hadn’t been contributing in typical fashion. Across four minutes, he failed to score, missing his only shot attempt, and didn’t add any other stats, hampered by his injury.

If the forward’s injury causes him to sit out tonight’s game, the team has a plethora of wings to slot in at his position, including breakout player Jordan Walsh and rookie Hugo Gonzalez.

Hauser has struggled to find rhythm this season, logging a career-worst 34.2% from three at 6.9 points per game, as well as 3.5 rebounds and 1.4 assists.

For a team already missing Jayson Tatum as he recovers from an Achilles rupture, Hauser’s loss is especially significant as a championship veteran and a reliable shooter off the bench.

At the time of writing, the Celtics lead 66-58, but there’s no update on Hauser, and he’s not present on the Celtics’ bench. Only time will tell if his team can close it out at home against the best team in the Eastern Conference.

Update: Hauser failed to return to the game.

Detroit Pistons Showcase Confidence Against Boston Celtics as Season Series Tightens

The Celtics are coming off a rare stumble. They were on a five-game winning streak earlier in December before losing to a shorthanded Milwaukee Bucks squad. The 15-point loss came after a cold shooting night and a second-half collapse on offense. Without Tatum, the margin for error has narrowed, and Hauser’s loss hurts even more as Jaylen Brown takes on a heavier workload.

Brown has posted elite scoring numbers this season, but the Celtics’ ability to sustain their production around him remains a question.

By contrast, the Pistons arrive in TD Garden with momentum and belief extending beyond their short winning streak. The team is off to one of the best starts in franchise history at 20-5, and their blowout win against the Atlanta Hawks showcased the identity they have leaned into all season: overwhelming depth.

Eight of their players logged double-digit scoring nights, and non-starters accounted for more than half of the team’s points.

The third meeting between the two teams this season serves as a tone-setter as much as a tie-breaker. Each side has defended home court once, with Cade Cunningham and Jaylen Brown trading explosive performances.

Tonight’s matchup has been close throughout. The impending fourth quarter will test the Celtics’ closing ability, rhythm, and whether the Pistons’ confidence is just noise or something much more real.