The Boston Celtics surrendered a 22-point lead in a disappointing 108-104 loss to the Detroit Pistons on Tuesday night, highlighting a sharp contrast between their strong start and faltering finish at the Little Caesars Arena.

Jayson Tatum, who struggled throughout the game, finished with just six made field goals on 23 attempts and went scoreless on seven three-point attempts. He missed all nine shots taken beyond 17 feet and made only two of seven attempts at the rim. The Pistons assigned first-team All-Defense Ausar Thompson to guard Tatum, which proved effective in limiting his impact. Reflecting on his performance, Tatum acknowledged the need for improvement, saying he must slow down when driving to the basket and play better overall.

Boston’s offense faltered in the second half as Detroit intensified its defensive pressure, generating transition opportunities and capitalizing on open three-pointers. The Celtics also lacked interior presence, with new addition Mitchell Robinson and Neemias Queta combining for just seven points and seven rebounds over 40 minutes. Robinson, making his Boston debut, acknowledged his struggles on the glass and the need to compete harder after being physically outmatched, particularly by Jalen Duren, who dominated the boards during the Pistons’ comeback.

The Celtics appeared fatigued and lacked urgency in the final 20 minutes, relying heavily on veteran Malcolm Brogdon, who missed five of seven shots after a strong third-quarter effort. With little success attacking the rim or drawing fouls, Boston’s offense reverted to outside shooting, moving away from their usual isolation plays involving Tatum and Jaylen Brown. The team’s offensive struggles were closely tied to defensive lapses, allowing Detroit to hit 11 second-half three-pointers and earn 24 trips to the free-throw line.

Duncan Robinson led the Celtics with eight free-throw attempts but fouled twice on catch-and-shoot three-point attempts during Detroit’s rally. Boston’s inability to contain Duren under the basket further compounded their difficulties on defense.

The loss underscored concerns about the Celtics’ ability to maintain intensity and focus throughout a full game, especially when leading comfortably. Detroit’s physicality and hustle overwhelmed Boston’s depth and energy off the bench. At one point, the Pistons scored nine points in just over a minute, epitomizing the Celtics' defensive breakdown and mental lapses.

While the defeat serves as a tough early lesson for Boston’s retooled roster, the Celtics will need to address both offensive consistency and defensive resilience if they hope to meet expectations for the season. With the team’s identity still taking shape, Tuesday’s collapse offers a clear warning about the challenges ahead.