|2020 Australian Open|
|Venue: Melbourne Park Dates: 20 January to 2 February|
|Coverage: Listen on BBC Radio 5 Live Sports Extra and online; Live text on selected matches on the BBC Sport website and app.|
Play was delayed on the outside courts at the Australian Open on Thursday because of the dust and mud that came down with the rain in a storm in Melbourne on Wednesday night.
The courts had to be power-washed with organisers saying the start would be delayed by three hours on most of them.
Play eventually began on courts three and 19 but rain then forced a suspension until nearly 04:00 GMT.
Matches started as scheduled at 00:00 on the three courts with a roof.
On Margaret Court Arena, Swiss Belinda Bencic overcame Latvia’s Jelena Ostapenko in a fluctuating match to the reach the third round.
The sixth seed, 22, lost four games in a row in both sets but still managed to win 7-5 7-5 against the 2017 French Open champion.
Spain’s former world number one Garbine Muguruza also progressed with a 6-3 3-6 6-3 victory over Australian Ajla Tomljanovic on Rod Laver Arena.
The 26-year-old, twice a Grand Slam champion but unseeded in Melbourne, faces Ukrainian fifth seed Elina Svitolina or American Lauren Davis next.
Czech second seed Karolina Pliskova had a straightforward 6-3 6-3 win over Germany’s Laura Siegemund, while Croatia’s 19th seed Donna Vekic beat France’s Alize Cornet 6-4 6-2.
Briton Heather Watson’s second-round match against 16th seed Elise Mertens is scheduled second on court 22.
Jamie Murray and Neal Skupski’s first-round men’s doubles match was cancelled because of the delays to the schedule on Thursday.
There were delays to Australian Open qualifying last week because of the “very poor” air quality from ongoing bushfires in the country.
Jonathan Jurejko, BBC Sport at Melbourne Park
Melbourne is the city which coined the phrase – and inspired the Crowded House song – Four Seasons in One Day. On Wednesday it appeared to be monsoon season.
But, unusually, the rain band threw down a slurry-looking orangey/brown dust.
This murky torrential rain started as fans left Melbourne Park after Roger Federer’s win at about 10:30pm and continued to hammer down overnight.
Apparently brought down from the dusty north, it was deposited over Melbourne and left clothes, cars and tennis courts covered in brown dirt.
Most strikingly it turned the city’s arterial Yarra river – called the ‘upside down’ river because of its high turbidity – looking even slurrier than usual.
For the Australian Open, it meant a clean-up operation powered by jet-streamed hoses and squeezy mops on the courts – although it begged the question why covers are not used in these situations.
As one tennis fan quipped on Twitter, the clay season came early.
Article courtesy of BBC Sport