Complex sentence: Dempsey studied the play of Argentina's national team, especially Diego Maradona, and was heartbroken when the news came to Nacogdoches that Maradona would not be playing in the 1994 World Cup game played in the Cotton Bowl.
Split into simpler sentences: Dempsey studied the play of Argentina's national team, especially Diego Maradona. Clint was heartbroken when the news came to Nacogdoches that Maradona would not be playing in the 1994 World Cup game played in the Cotton Bowl.