Complex sentence: The 2009 Stanley Cup Final, commonly known as the 2009 Stanley Cup Final, was the best-of-seven NHL championship series of the 2009 Stanley Cup playoffs contested between the Eastern Conference champion Pittsburgh Penguins and the Western Conference champion Detroit Red Wings.
Split into simpler sentences: The 2009 Stanley Cup Finals was the championship series of the National Hockey League's (NHL) 2008--09 season, and the culmination of the 2009 Stanley Cup playoffs. It was contested between the Eastern Conference champion Pittsburgh Penguins and the Western Conference champion Detroit Red Wings.