Rafael Nadal won all his service games and ended the 21-year-old American Frances Tiafo's best round at a major with a dominant 6-3, 6-4, 6-2 victory in the Australian Open quarterfinals.
Against Tiafoe, who had previously never been past the third round of a big, Nadal won 20 of the first 23 points in his service game and deleted the only two breakpoints he faced, both early in the second set.
Nadal has won every set he has played in the tournament so far, the first time he has made his way to the semi-finals in Australia since 2009, the only time he won the title.
The 32-year-old reached his 30-year-old semifinal and next faces 20-year-old Stefanos Tsitsipas, who eliminated two-hour defense master Roger Federer in fourth round and took care of no. 22-seed Roberto Bautista Agut from Spain 7-5, 4-6, 6-4, 7-6 (2) Tuesday.
A post-millennial through and through, Tsitsipas, as excited about doubling his YouTube channel supporters, succeeded in more than 30,000 within a couple of hours – "Oh, my God. Really?" – when he was becoming the youngest semi-finalist in Grand Slam since 2007.
"Guys," he urged people to watch the Australian Open Tuesday personally or on television, "if you haven't subscribed, please subscribe."  For the first time since 2016, top-seeded Novak Djokovic has reached the Australian Open Quarter Finals, where he will meet Kei Nishikori, a five-victory victory over Pablo Carreno Busta.
Two-time defense master Roger Federer was saddened by the Greek youth Stefanos Tsitsipas in the fourth round of the Australian Open on Sunday evening.
Let someone get the idea that Tsitsipa's amazing victory over Federer in Melbourne Park was a fluke, he followed it up by becoming the first player from Greece to reach the last four in a major tournament.
"I knew winning against Federer was important, played a big role in my image – like who I am," said Tsitsipas, who eliminated the two-hour defense champion in fourth round Sunday. "But I knew the biggest challenge was today's battle that I can prove myself again."
Cheered on by a high flagging contingent of Greek fans inside and outside Rod Laver Arena, Tsitsipas showed its varied toolbox, producing 22 aces, 30 more winners than undisturbed errors (68-38) and a nose to get to the net .
It was a fantastic encore to what he did to his idol, the 37-year-old Federer, in a Result that left Tsitsipas unable to sleep.
Tsitsipas was down for a break in the first and third sets before they both turned to Bautista Agut, whose own thrill to the quarterfinals contained victories over Andy Murray, a three-hour major champion, and Marin Cilic, 2014 US Open champion and runner-up to Federer in Melbourne Park a year ago.
"Well he's a good player, no? He's very complete. He has a good advance and backhand. Well, Bautista said Agut about Tsitsipas." I think he knows the game. He knows how to play. "
That's why his companions voted for the most improved player by 2018. And why is he already in the top 20, seeded 14th in Australia.
Tsitsipas was recently asked what his goals were for this season The answer: to reach the semifinals of a major Now we are all three weeks in 2019, and that box is checked.
Then he is satisfied?
"It is like the starting point to go deeper," replied Tsitsipas. "It is like the least I would call it."
No man so young as Tsitsipas had advanced so far at any Grand Slam tournament since Novak Djokovic at the 2007 Open or 2007, when Andy Roddick in 2003.
"It all feels like an adventure, almost. I just live the dream and live what I have worked hard for, "said Tsitsipas, who dropped his racket, fell on his back and covered his face with his hands at the end of the fight." I mean, I feel a little emotional, but not too much because I know I've worked hard to get here. "