Most successful pro sports franchises

Published On: Jan 30 2013 07:36:14 PM PST   Updated On: Dec 11 2013 01:14:03 PM PST

Take a look at some of the most successful franchises in pro sports.

Ray Allen, Boston Celtics
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Adam Hunger/Reuters

Boston Celtics: The Celtics have won a league-best 17 NBA titles. Their last victory was in 2008.


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