Nadal, Halep roll on

World number one Rafael Nadal and Wimbledon champion Simona Halep dodged an exodus of seeded players as the shocks kept rolling at the Australian Open on Saturday.

After Serena Williams and title-holder Naomi Osaka fell by the wayside on Friday, second seed Karolina Pliskova crashed out on a day of carnage in the women's draw.

Switzerland's Belinda Bencic, the sixth seed, won only one game against Estonia's Anett Kontaveit, the world number 31, as she bombed 6-0, 6-1.

And a resurgent Garbine Muguruza, a two-time Major-winner, thrashed fifth seed Elina Svitolina 6-1, 6-2 as six of the top 10 women's seeds exited in round three. Tenth seed Madison Keys lost to Maria Sakkari on Friday.

Croatian 19th seed Donna Vekic also crumbled to lower-ranked opposition when she lost 7-5, 6-3 to Poland's Iga Swiatek, who is returning from a stress fracture in her foot.

While the women's seeds fell, Nadal had few problems against fellow Spaniard Pablo Carreno Busta - despite staying up to watch Roger Federer's thrilling late-night win over John Millman, which went to a fifth-set tie-breaker.

Nadal, 33, who can equal Federer's record 20 Grand Slam titles with victory in Melbourne, will now meet either Karen Khachanov or Nick Kyrgios - the outspoken Australian with whom he has a running feud.

Kyrgios, who labelled Nadal "super salty" last year, and mimicked his serving routine during his second-round win, has his biggest test yet against the Russian 16th seed, who won their only meeting in Cincinnati last year.

Germany's Alexander Zverev dismissed Fernando Verdasco 6-2, 6-2, 6-4 to set up a last-16 clash with Russia's Andrey Rublev, who remained unbeaten this year with his win over David Goffin.

Halep put away Kazakhstan's Yulia Putintseva 6-1, 6-4 to reach the last 16, where she will play Belgium's Elise Mertens, who won in three sets against CiCi Bellis - ending the American's Grand Slam return from long-term injury.

Angelique Kerber, the 2016 champion, beat Camila Giorgi 6-2, 6-7 (4/7), 6-3 to set up a meeting with Russia's 30th seed Anastasia Pavlyuchenkova, who knocked out Pliskova 7-6 (7/4), 7-6 (7/3).

In other results, Austrian fifth seed Dominic Thiem came through 6-2, 6-4, 6-7 (5/7), 6-4 against Taylor Fritz, and Russia's Rublev beat Goffin 2-6, 7-6 (7/3), 6-4, 7-6 (7/4).