Simplify the following text for a Grade 8 native English-speaking person.
Original: The tournament took place over twenty-five courts , including three showcourts : the Hisense Arena , the Margaret Court Arena and the Rod Laver Arena ( the Hisense and Rod Laver Arenas have roofs which allow play to continue indoors should the roof be needed ) .
Simplified: The three biggest courts used were the Hisense Arena , the Margaret Court Arena and the Rod Laver Arena .