Margaret Court Arena at the Australian Open. Rod Laver Arena, the centre court, in the background.

The Extreme Heat Policy is a rule pertaining to the Australian Open (tennis). It was introduced in 1998 after consultation with a number of tennis players. Under the Policy, no new matches commence on outside courts, but matches already in progress continue to their conclusion. There is provision to make breaks between games and sets longer than usual in these matches. Download high resolution version (1080x720, 150 KB)Yevgeny Kafelnikov and Jarkko Niemenen on the Margaret Court arena at Australian Tennis Open. ... Download high resolution version (1080x720, 150 KB)Yevgeny Kafelnikov and Jarkko Niemenen on the Margaret Court arena at Australian Tennis Open. ... The Australian Open is the first of the worlds four Grand Slam tennis tournaments, held each January at Melbourne Park. ... A tennis net Tennis is a game played between either two players (singles) or two teams of two players (doubles). Players use a stringed racquet to strike a hollow rubber ball covered with felt over a net into the opponents court. ...

The Wet Bulb Globe Temperature is used to help decide whether the EHP should be implemented. The WBGT is a measure of heat stress index and takes into account the actual temperature as well as radiation, wind and humidity. It is a combination of the WBGT with the actual air temperature that is used to decide whether the EHP is activated. The Wet Bulb Globe Temperature (WBGT) is a heat stress indicator that calculates three heat stress factors: dry-bulb temperature (normal temperature) wet-bulb temperature (humidity indicator) black globethermometer (radiant heat from the sun) One determines the WBGT value by a mathmatical formula: WGBT= 0. ...

There is much controversy to the rule, though. It has forced players to forfeit matches, such as Janko Tipsarevic who chose not to continue playing against David Nalbandian in the 2007 Australian Open. Australian Open organizers defended the policy stating that matches can be halted at the discretion of the tournament referee. Country : Serbia Hometown : Belgrade, Serbia Height : 1. ... David Nalbandian (born January 1, 1982, Unquillo, Córdoba, Argentina) is a professional tennis player from Argentina. ... The 2007 Australian Open will be held in Melbourne, Australia from 15 January through 28 January 2007. ...