MELBOURNE, Australia -- The Australian Open's first formal opening ceremony became the Roger Federer show on the eve of the season-opening major. There was Crowded House, the band, playing a set of four hits. There was a full house — a capacity crowd in the 15,000-seat stadium.

Highlights of the first day at the Australian Open on Sunday (times GMT): 1202 ALCARAZ EASES PAST WALTON World number one Carlos Alcaraz made light work of Australian Adam Walton, sailing into the second round with a 6-3 7-6(2) 6-2 win.

Madison Keys and Jannik Sinner are the Australian Open defending champs -- can either win again? Our experts make predictions.