 In Australia, most major stadiums which can hold over 50,000, such as the Melbourne Cricket Ground and Adelaide Oval, are circular or oval-shaped venues which – while suitable for cricket and Australian rules football – pose the same sight-line problems for football, rugby league, and rugby union as an athletics venue would.Playing sports with rectangle-shaped pitches on larger ovals often means fans can be as much as 30 m or more from the sidelines.Both Stadium Australia in Sydney and the Docklands Stadium in Melbourne have retractable seating to be able to change from an oval to rectangle shape and bring fans closer to the action if needed.