The 2014 San Antonio Spurs.

Spurs lost in a tight series in 2013 to Miami Heat. In 14 preseason, Spurs players called out Heat players saying they should have won, would best them next time, and challenged the Best to meet them in the Finals.

Well, it happened. In a gentleman's sweep(5 games) the Spurs handed the LeBron James and the Miami Best the biggest asswhoopin in Finals history. It looked easier than easy.