The Celtics played a total of 122 championship games. Their win-loss record is 74-48.
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Twelve times. The Celtics have won nine of the championship meetings.
17.
18
Seventeen.
Twice. In 2008, they defeated the Los Angeles Lakers in six games. In 2010, the Lakers defeated the Celtics in seven.
17
Once. The Celtics defeated the Los Angeles Lakers in six games to win the 2007-2008 NBA title.
The Boston Celtics have won 17 NBA championships.
17
once
17 championships.