Photo: PHOTOSPORT Serena Williams begins her latest campaign to win a record-equalling 24th Grand Slam title on day one while Novak Djokovic is also in action, the Serb seeking a record-extending ninth Australian Open crown. Once dubbed the 'Happy Slam' by Roger Federer, this year's edition might be remembered as the 'Nervous Slam' after struggling to build enthusiasm in a wary host nation, but organisers hope the anxious buildup will be forgotten when the action begins. Tennis Australia (TA) have made a Herculean effort to try to stage it safely and spent a fortune on biosecurity measures in a country where community transmission of the novel coronavirus has become rare.