What team in the nba has won a 3-0 deficit in the finals?

As of October 2023, no NBA team has ever come back from a 3-0 deficit in the NBA Finals to win the championship. However, the Boston Celtics overcame a 3-0 deficit in the Eastern Conference Finals in 2004, but that achievement has not occurred in the Finals itself. The challenge of overcoming such a deficit in the Finals remains a significant hurdle in NBA history.