Boston Celtics
Founded in 1946, the Celtics are one of basketball’s founding franchises. It is the most successful in NBA history, with 17 championships, which accounts for 23.9 percent of all NBA championships since the league started.
They have a world-famous rivalry with the Lakers and have met them a record 12 times in the NBA Finals (including their most recent appearances in 2008 and 2010).
During their remarkable history, the Celtics have only truly struggled in one period, the 1990s.