MELBOURNE (Reuters) - Highlights of day seven of the Australian Open tennis championships at Melbourne Park on Sunday. Times local (GMT +11):
1615 KARATSEV STUNS AUGER-ALIASSIME IN FIVE-SET EPIC
Russian qualifier Aslan Karatsev erased a two-set deficit to beat Canada's 20th seed Felix Auger-Aliassime 3-6 1-6 6-3 6-3 6-4.
1545 SERENA PASSES SABALENKA TEST
American Serena Williams (NYSE:WMB), chasing a record-equalling 24th Grand Slam title, held off a spirited challenge from seventh seed Aryna Sabalenka 6-4 2-6 6-4 to reach the quarter-finals.
1255 OSAKA BATTLES PAST MUGURUZA
Third seed Naomi Osaka saved two match points as she rallied from a set down to beat last year's finalist Garbine Muguruza 4-6 6-4 7-5.
1219 HSIEH REACHES FIRST GRAND SLAM QUARTER-FINAL
Taiwan's Hsieh Su-wei reached the first Grand Slam quarter-final of her lengthy career when she shocked Czech 19th seed Marketa Vondrousova 6-4 6-2 on Margaret Court Arena.
At 35, Hsieh will be the oldest player to make a Grand Slam quarter-final debut in the open era when she plays Naomi Osaka later this week.
11.10 PLAY UNDERWAY ON DAY SEVEN
Play got underway as scheduled on the second day of Victoria's snap five-day coronavirus lockdown, which has resulted in fans being shut out of Melbourne Park.
Two new locally acquired cases of COVID-19 were reported in the state in the 24 hours to Sunday morning.
The temperature was a cool 18 degrees Celsius (64 degrees Fahrenheit) with some sunshine forecast for the afternoon.