Barty let out an uncharacteristically loud roar of delight on Monday, overjoyed at reaching the last-eight for the first time while providing an unhappy ending to the fairytale run of Krejcikova.

“Being in the quarter, I’m happy, I’m excited,” smiled Barty after her victory over the Czech.

“It’s another stepping stone for me, another first, I suppose. It’s going to be a new scenario, one that I’m going to look forward to and enjoy no matter what,” said the world No.1.

It set up a last-eight meeting tonight with Australia’s No.2 Ajla Tomljanovic.

Tomljanovic reached her first-ever grand slam quarter-final overnight but she achieved the milestone in a way she would not have wanted as her British teenage opponent Emma Raducanu had to pull out of the match with a breathing problem.

Tomljanovic was 6-3 3-0 ahead in their last-16 clash on Monday when the 18-year-old Briton, having called for the trainer, had to go off court to be treated for a problem with breathlessness that appeared to have cropped up at the start of the second set.

Meanwhile, Roger Federer has weathered a first-set storm to become the oldest man in the Open Era to reach the Wimbledon quarter-finals with a 7-5 6-4 6-2 win over Italian 23rd seed Lorenzo Sonego.

The eight-time All England Club champion, who will turn 40 next month, will meet either Russian second seed Daniil Medvedev or Poland’s Hubert Hurkacz, whose match will resume on Tuesday.

Novak Djokovic reached his 12th Wimbledon quarter-final on Monday to pull even with Arthur Gore, who had a 117-year head start, while a parade of newcomers also made the final eight.

-with AAP