Who is the worst team to ever win a championship?

There is often talk about the best team to never win a championship, but who is the worst championship team?

My pick is the 77-78 Washington Bullets.

The 1977-78 Washington Bullets are considered one of the weakest teams to win an NBA championship. They finished the regular season with a record of 44-38, which is not good for a championship-winning team. The Bullets were the fourth seed in the Eastern Conference going into the playoffs.
Despite their regular-season performance, the Bullets managed to make a surprising playoff run. Led by players like Wes Unseld, Elvin Hayes, and Bob Dandridge, they defeated the Atlanta Hawks, San Antonio Spurs, and the Philadelphia 76ers to advance to the NBA Finals.
In the NBA Finals, the Bullets faced the Seattle SuperSonics. The series went to seven games, and the Bullets narrowly won the championship by securing a 105-99 victory in Game 7.