Serbia's Novak Djokovic celebrates [Source: Reuters]

Novak Djokovic and Carlos Alcaraz swept into the third round of the Australian Open in the wake of women’s top seed Aryna Sabalenka on Wednesday as the rain returned and Olympic champion Zheng Qinwen bowed out.

While Zheng, who was stunned 7-6(3) 6-3 by Laura Siegemund, was the first top-10 women’s seed to exit, sixth seed Casper Ruud became the fourth to fall on the men’s side after going down 6-2 3-6 6-1 6-4 to Czech teenager Jakub Mensik.

Djokovic, however, continued to defy the rise of the younger generation and took another step towards a 25th Grand Slam title with a 6-1 6-7(4) 6-3 6-2 victory over 21-year-old qualifier Jaime Faria on Rod Laver Arena.

Second seed Alexander Zverev made light work of contemporary Pedro Martinez 6-1 6-4 6-1 in the final match on the main showcourt, while Alcaraz, still only 21, served up another quick-fire win to advance past Yoshihito Nishioka 6-0 6-1 6-4.

Sabalenka, bidding to become the first woman to claim three straight Australian Open titles since Martina Hingis in the late 1990s, had a much trickier time in the opening match on Rod Laver Arena.

The Belarusian trailed Jessica Bouzas Maneiro 4-1 in the second set but battled back to win 6-3 7-5 and extend her winning streak at the hardcourt Grand Slam to 16 matches.

Third seed Coco Gauff also made heavy work of her second-round tie against Britain’s Jodie Burrage in the evening session on the main showcourt but got the job done in two sets, 6-3 7-5.

Morning rain delayed the start of the matches on the outer courts and returned to disrupt the programme in the late afternoon.

Belinda Bencic eased past Suzan Lamens 6-1 7-6(3) in the first match on Court Six but Zheng, her successor as Olympic champion, was fighting back the tears on John Cain Arena after being stunned by unseeded German Siegemund on John Cain Arena.

Bencic will next face twice champion Naomi Osaka, who rallied past 20th seed Karolina Muchova 1-6 6-1 6-3 to reach the third round of a Grand Slam for the first time since taking a break to have a child.

Members of Australia’s large Lebanese community were in place on Court Three long before qualifier Hady Habib’s match against Frenchman Ugo Humbert.

There were still plenty of cheers echoing around the precinct late into the night as Australia’s Aleks Vukic took out 22nd seed Sebastian Korda 6-4 3-6 2-6 6-3 7-5 and local Thanasi Kokkinakis battled it out over five sets with Jack Draper.

Kokkinakis was broken while serving for the match in the fourth set and British 15th seed Draper silenced the crowd by prevailing 6-7(3) 6-3 3-6 7-5 6-3.

They were not rewarded for their patience as the first Grand Slam main draw campaign for a Lebanese player ended in a 6-3 6-4 6-4 defeat.