#1. Spain (2007-2012) and Boston Celtics (1957-1969)
The Spain National Football team, with its tiki-taka gameplay, dominated the international football scene for a good period of time from 2007 to 2012. The team captured all the international titles on offer during the period. They became the European Champions in 2008 and 2012 and also lifted the World Cup in 2010. Between 2007 and 2009, the Spain National football team went on a 35 game unbeaten streak. With football superstars like David Villa, Xavi, Iniesta, Puyol, Xabi Alonso, and Iker Casillas leading the team by example, Spain often won their matches convincingly by depriving their opponents of any time on the ball.