Sunday 's day session drew a nationwide television audience of over 473,000 as news of the unexpected result sent shockwaves around the planet .
Sunday 's day session featured Ana Ivanovic 's upset victory over Serena Williams on Rod Laver Arena .
Sunday 's day session , which featured Ana Ivanovic 's upset victory over Serena Williams on Rod Laver Arena , drew a nationwide television audience of over 473,000 as news of the unexpected result sent shockwaves around the planet .