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 .
High temperatures expected for Australian Open tennis championships . Temperatures set to reach 42 degrees Celsius in Melbourne . Tournament has an 'Extreme Heat ' policy . Men 's champion Novak Djokovic fell victim to conditions in 2009 .