The second set followed a similar pattern, Keys claiming the only break in the sixth game and she never relinquished it en route to the final four.
"I've gotten a lot better managing my emotions once it gets to this part and knowing that everything is going to be probably more amped up, " she said.
The Croatian has built on that success, reaching two more finals in the last two seasons, but Nishikori's only similar run came in NY two years ago when he defeated Andy Murray to reach the semi-finals before losing to Stan Wawrinka. It wasn't as easy for Kei Nishikori, who had to battle out a five-set marathon against No. 7 Marin Cilic to make his third US Open semifinal. Hopefully, I can come back to that stage. He sat out previous year because of an injured right elbow. But her killer instinct sets her apart. Don't expect Williams to retire until she's got No. 25 in the bag. In 2010, the American champion was sidelined for a year after a serious foot injury.
To do it, Osaka, already the youngest Japanese woman in the Open Era to make a major semifinal and just the third Japanese woman to make a major semifinal, will have to find a way to solve Madison Keys.
Tsurenko didn't appear bothered by the conditions, but whether it was her health or just first-time jitters, she was off from the minute she stepped onto Arthur Ashe Stadium.
She was finally tested in the round of 16, edging past No. 26 Aryna Sabalenka 6-3, 2-6, 6-4 in a little more than two hours, but she was back in complete control against Tsurenko, winning 20 of 22 points (91 percent) on her first serve.
Both have dropped one set apiece en route to the semi-finals, with the pair enjoying some impressive results along the way. Now, the American ace is on the cusp of tying the all-time record of Australia's Margaret Court, who played before and during the Open Era.
Serena Williams wants to win one for the mothers. She knows she missed a great opportunity at Wimbledon. He plays [video] games and stuff, too. The statistics show she's backing up her prudence with power.
"She has taken a step into uncharted territory for Japanese women in NY", the paper added.
Peter Bodo has been covering tennis for over 35 years, mostly recently for ESPN.
That Williams is being so cautious is more bad news for Sevastova. In the end her dominance was reflected in the one-sided score.
This was devoid of a clarification of why her outfit was deemed "disrespectful", and completely glossed over the fact that it had been created to help Williams mitigate blood clots in her legs and prevent them from recurring.
The Williams of old may have issued a sarcastic rejoinder to Giudicelli, or even an incensed one.
Osaka had consecutive 50-minute matches earlier in the tournament, including a 6-0, 6-0 thrashing of Aliaksandra Sasnovich in the third round.
In a rematch of the 2014 final, it was the Japanese star who exacted his vengeance by squeezing through to the US Open semi-finals after a gruelling 2-6 6-4 7-6 (7-5) 4-6 6-4 victory in four hours and eight minutes. But Williams is perhaps the unlikeliest candidate to feel intimidated. I think she can win a title now. "She's been playing really well for actually a long time".