Australian Open 2019: live scores, results, night 1, Roger Federer v Denis Istomin, Ash Barty v Luksika Kumkhum
![Swiss tennis player Roger Federer celebrating during Australian Open 2019 tennis tournament, Melbourne Park, Melbourne, Victoria, Australia Stock Photo - Alamy Swiss tennis player Roger Federer celebrating during Australian Open 2019 tennis tournament, Melbourne Park, Melbourne, Victoria, Australia Stock Photo - Alamy](https://l450v.alamy.com/450v/t7dh7t/swiss-tennis-player-roger-federer-celebrating-during-australian-open-2019-tennis-tournament-melbourne-park-melbourne-victoria-australia-t7dh7t.jpg)
Swiss tennis player Roger Federer celebrating during Australian Open 2019 tennis tournament, Melbourne Park, Melbourne, Victoria, Australia Stock Photo - Alamy
![Retirement not on Roger Federer's mind after easing into Australian Open last 16 | Australian Open 2019 | The Guardian Retirement not on Roger Federer's mind after easing into Australian Open last 16 | Australian Open 2019 | The Guardian](https://i.guim.co.uk/img/media/932d1d945c99ebdf38519bf7bf05fd1726e9b0a7/0_235_4724_2834/master/4724.jpg?width=465&dpr=1&s=none)