High temperatures expected for Australian Open tennis tournament . Temperatures set to be 42 degrees Celsius in 2009 . While the opening grand slam of the season has an Extreme Heat Policy -- in place since 1998 -- it is rarely invoked and players simply have to make do . Tournament has an ' Extreme Heat ' rating . Men 's champion Novak Djokovic fell victim to conditions in 2009 .
High temperatures expected for Australian Open tennis tournament . Temperatures set to be 42 degrees Celsius in 2009 . Tournament has an ' Extreme Heat ' rating . Men 's champion Novak Djokovic fell victim to conditions in 2009 .