Awaiting her in the final is another Grand Slam champion - second seed Caroline Wozniacki, who looked in total control as she defeated home favourite Wang Qiang 6-1, 6-3 in just one hour and 24 minutes.
And the world number 20 saw out the set in resounding fashion with an ace out wide, before carrying her momentum into the second with a break for 3-2 as Osaka erred on the forehand side.
US Open champion Naomi Osaka has pulled out of this week's Hong Kong Open to prevent aggravating a slight back injury, organizers said on Sunday.
"If you haven't won a Slam, they'll say, 'She hasn't won a slam'".
"I feel great being here". "I'm just thinking one match at a time, and it can only get harder from here".
The 28-year-old is one victory away from her fourth - but biggest - WTA title of her career.
"I also want to thank and apologise to Anastasija for today".
"She didn't give me any presents, it was tough", said Sevastova, who retired in May 2013 because of persistent injuries, only to return in January 2015. "We were thinking, okay, maybe top 100 is a goal, but everything else is a bonus right now".
Meanwhile, Argentinas Juan Martin del Potro beat Filip Krajinovic of Serbia in straight sets to advance to the men's singles semi-finals.
Fognini withdrew from the semi-final because of ankle pain.
Alex Cora made the right moves when Red Sox needed it most
Just like that, Holt has become the first player in Major League Baseball history to hit for the cycle in the postseason. That's also the only run Eovaldi has conceded in four Red Sox appearances against NY this season, covering 23 innings.
Mrs Trump wraps up Africa solo tour
Trump has been promoting the "Be Best" initiative throughout her tour, and her husband praised her efforts as "fantastic". Egypt will be her final stop on her tour of the continent focused on child welfare, education, tourism and conservation.