How does this impact Boston's postseason hopes? More importantly, what does it do to the team's contention window in the short and medium term?

With Jayson Tatum potentially set to miss the entire 2025-26 season due to an Achilles injury, has the Celtics' contention window closed?

Boston Celtics star Jayson Tatum suffered a torn right Achilles tendon during Monday night's playoff loss to the Knicks, the team announced Tuesday. Tatum has already reportedly undergone surgery, and though an exact timetable for his return is not immediately clear, he is expected to miss a significant portion, if not all, of next season.