Updates from the evening session on the fourth dayBritish singles hopes end as Harriet Dart loses to HalepAnd email Katy here or tweet @KatyMurrells 12.04pm GMT

Related: Nick Kyrgios wins war with himself and Gilles Simon at
Australian Open 12.03pm GMT
It’s all going on. There’s been a quick turnaround on Margaret Court, where Stan Wawrinka is taking in the applause of the crowd after charging from a break down to win three games on the spin and see off Andreas Seppi 4-6, 7-5, 6-3, 3-6, 6-4. Taylor Fritz has come back from the brink, defeating Kevin Anderson 6-2 in the fifth from two sets behind, and Yulia Putintseva has recovered from the disappointment of being broken when serving for the match to take out last year’s semi-finalist Danielle Collins 7-5 in the third.