Langer faced criticism for his coaching methods from the players but in the past four months, he has guided Australia to a maiden Twenty20 World Cup title and a 4-0 Ashes series victory.
Mirza and her Ukrainian partner Nadiia Kichenok lost 4-6 6-7(5) to Slovenian team of Tamara Zidansek and Kaja Juvan in one hour and 37 minutes.
Discussions are now continuing with Cricket Australia over when the postponed fixtures will be played.
Barty extended her streak of service holds to 48 games and moved into the third round at Melbourne Park for the sixth consecutive year by beating 142nd-ranked qualifier Lucia Bronzetti 6-1, 6-1.
Victoria declared an emergency for hospitals in its state capital, Melbourne, and several regional hospitals from midday Wednesday because of staff shortages and a surge in patient admissions.
Aiming to be the first man in the Open era to win his second major title on his next Grand Slam appearance, Medvedev had a 6-1 6-4 7-6 (3) win over Henri Laaksonen on Tuesday in the first round
Refugee activists say the tennis star's treatment exposes the harsh treatment of dozens of others detained because of visa issues.
Gauff saved four match points from 5-0 down on Monday but that was the only good news in a match where the American made 38 unforced errors.
Djokovic has an almost iconic status in Serbia, and many there felt he was poorly treated by Australia.
With so much attention on the 11-day saga of Djokovic's attempt to participate in the year's first Grand Slam tournament, the returns of Osaka and Nadal have been overshadowed
Naomi Osaka started her title defence by winning the first five games on the way to a 6-3, 6-3 victory over Camila Osorio in the second match on the tournament's main court.
It wasn't immediately clear where Djokovic planned to travel next. The Dubai Duty-Free tennis tournament, which Djokovic won in 2020, doesn't start until Feb. 14.
England set a target of 271 for victory, crashed to 124 all out in the last session on the third day at Hobart.
Djokovic's visa originally was cancelled on Jan. 6 and he spent four nights in an immigration detention hotel before that decision was overturned by a judge on procedural grounds last Monday.
Djokovic has won a record nine Australian Open titles, including three in a row, but this time won’t even get the chance to try.