After two consecutive breaks of service for each player in the opener, Osaka set up a fourth set point opportunity with a crisp backhand victor and converted it when Svitolina found the net with a thumping return. "But in the end, she was just playing better today".
"And I know that it's going to be tough no matter who I play, and honestly I'm just trying to go inside because it's little bit hot right now".
The 21-year-old from Japan moved closer to a second consecutive major championship by parlaying her aggressive and powerful style into a 31-11 edge in winners that helped her put together a 6-4, 6-1 victory over Elina Svitolina on Wednesday at Melbourne Park.
Osaka's win sets up a tantalising possible US Open final rematch with Serena Williams, who had a meltdown during that loss and who faces Karolina Ploskova in Wednesday's last women's quarter-final.
Osaka and Nishikori's controversial depiction in the advertisement
"I tried to be consistent", the No. 4-seeded Osaka said, "or as consistent as I can".
Both players fired down aces to hold their opening service games then went on to exchange two breaks mid-way in the opening set.
Osaka blew three set point opportunities on Svitolina's next serve with three embarrassing errors, berating herself with angry slaps on the thigh.
Trailing 3-0, a downbeat Svitolina called for a medical time out due to a neck problem, and she continued to struggle on serve afterwards as Osaka broke again for 4-0, before it was swiftly wrapped up at 6-1.
"I didn't do that well in the last two rounds so that was my only goal and I think I did it well so I'm really happy with the way I played".