What went wrong for the Boston Celtics vs. the New York Knicks in the 2025 NBA Eastern Conference Semifinals? The Celtics fell in six games to the Knicks after a litany of injuries to Jayson Tatum, Jaylen Brown, and others derailed Boston's defense of their 2024 NBA Championship in surprising fashion.

The New York Knicks pulled off a stunning upset when they dethroned the Boston Celtics as NBA champions by defeating them 4-2 in their best-of-seven second-round playoff series. New York sealed Boston's fate by winning the first two games on the road at the TD Garden and then clinched the series win with a fourth win at the Maddison Square Garden.

The New York Knicks earned their first Eastern Conference finals berth since 2000 with a 119-81 Game 6 victory over the Boston Celtics on Friday night at Madison Square Garden. The game wasn't in doubt after the first quarter, as New York absolutely dominated both ends of the floor. It was the largest playoff victory in franchise history.