Australian Open 2019 Results, quarter-finals: Men's and women's singles round-up

The Australian Open 2019 quarter-finals began today with the bottom half playing their matches in the men's and women's singles.

Without further ado, let's take a look at what transpired on the courts of Melbourne Park throughout the day:

To kick things off on Rod Laver Arena, Greek sensation Stefanos Tsitsipas, who upset Roger Federer in the previous round, took on Roberto Bautista Agut, who was on a nine-match win streak since the beginning of the year.

The 20-year-old youngster continued his fine run of form and did not disappoint as he snapped Bautista Agut's win streak and became the first man from Greece to reach the Australian Open semi-finals. He was down a break in the early stages of the first three sets and apart from the second set, which he lost, he managed to fight back and win the other two. The fourth set went on serve till the very end and Tsitsipas won the match in the tie-break. The scoreline was 7-5, 4-6, 6-4, 7-6(2) in favour of Tsitsipas.

He will now take on 17-time Grand Slam champion Rafael Nadal in the first semi-final on Thursday. Nadal had an easy outing against USA's Frances Tiafoe. Apart from a few minor hiccups here and there, it was a relatively straightforward victory for the Spaniard in straight sets. The scoreline was 6-3, 6-4, 6-2 in favour of Nadal.

Moving on to the women's half, USA's Danielle Collins continued her dream run as she overcame Russian Anastasia Pavlyuchenkova in a tight three-set affair. Despite losing the first set 6-2, Collins fought back in the second set to win it 7-5. The third set was a breeze for her, winning it 6-1.

She will now take on Petra Kvitova in the semis on Thursday. Kvitova was in red-hot form once again as she handed a thrashing to local favourite and 14th seed Ashleigh Barty. The 8th seed won her match against the Australian in straight sets, with the scoreline being 6-1, 6-4.

In the mixed doubles, Leander Paes and his partner Sam Stosur were knocked out by the 5th seeds Robert Farah and Anna-Lena Grönefeld. It was an extremely close-fought affair, with the match going right down to the wire in the final tie-breaker. Eventually, Paes and Stosur lost 6-4, 4-6, [8-10]. With his exit, the Indian challenge at the Australian Open came to an end.

The top half will play their quarterfinal matches tomorrow. In the men's singles, Novak Djokovic will take on Kei Nishikori whereas Milos Raonic will take on Lucas Pouille. In the women's singles, Serena Williams will take on Karolina Pliskova while Naomi Osaka will take on Elina Svitolina.