Complex sentence: Since their win in 2009, the Penguins have lost in the Conference Finals in 2013 in four games to the Boston Bruins and were eliminated twice by the New York Rangers in 2014 and 2015.
Split into simpler sentences: Since their win in 2009, the Penguins have lost in the Conference Finals in 2013 in four games to the Boston Bruins. The Penguins were eliminated twice by the New York Rangers in 2014 and 2015.