The Most Successful Franchise In Professional Sports History Quite simply, the Boston Celtics are "the Franchise," Celtics Green is "the Color," and the winking leprechaun that serves as the team's logo symbolizes five decades of NBA tradition. A charter member of the Basketball Association of America (which evolved into the NBA), Boston flies more title banners from the rafters of its home arena than any other franchise.
Although the Celtics have known some tough years, no other professional sports franchise can match the team for its record of success. Certainly no other team has ever dominated a league the way Boston did from 1957 to 1969, when the club won 11 NBA Championships. For those 13 years, the team was "The Dynasty."
