Complex sentence: In 2006, he managed the Florida Marlins and was named the National League Manager of the Year and he managed the Yankees from 2008--2017, winning the 2009 World Series.
Split into simpler sentences: In 2006, he managed the Florida Marlins and was named the National League Manager of the Year. Girardi he managed the Yankees from 2008 to 2017, winning the 2009 World Series.