Updates from the quarter-final at Rod Laver ArenaAny thoughts? Email or tweet @mike_hytner 2.16am GMT
![Australian Open day nine: Ash Barty v Petra Kvitová – live!](https://i.guim.co.uk/img/media/70cab681f74e48df243712fbceb15e8f4cd69eb2/0_111_5006_3006/master/5006.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdGctbGl2ZS5wbmc&enable=upscale&s=3227f9c41a17e2876de2e1a25ef897df)
First set: Barty* 1-2 Kvitová (* denotes server) Here we go then, Kvitová continues her ominous start to this match with the first break of the day! To love at that, and secured with a belting forehand crosscourt winner that Barty can’t get anywhere near to. The Czech is looking good so far. 2.14am GMT
First set: Barty 1-1 Kvitová* (* denotes server) Kvitová sets out her stall early in an entirely more comfortable service game, which she wins to love. Probably a good time to remind yourselves of the Czech’s incredible journey over recent years, courtesy of this interview with Simon Hattenstone:
Related: Petra Kvitová: ‘I didn't know if I'd be able to hold a racket again’