The second-seeded Kamiji was just too consistent for Van Koot, who was playing in her first event since March and was struggling with the aftermath of a wrist injury.
“We already played so many times before, and we know each other well,” said Kamiji, who won 69 points, 24 more than her opponent. “I played well today, I made many balls to her backhand and I tried a few new things.”
Tough day for De Groot
It was a tough day at the office for the top-seeded De Groot, who won her third consecutive US Open title last month.
“I am working on certain things in practice, my serve in particular, and I noticed that I don’t have the full confidence with that yet,” said De Groot, who hit nine double faults. “My opponent took advantage of that. It just wasn’t enough from my side.”
Although Ohtani is a relative newcomer at this level, De Groot was impressed with her playing style.
“She is very consistent, she didn’t give me any free points, not many errors,” said De Groot. “She made a lot of pressure with the service return, she made it very difficult for me.”
When asked who would have the edge in the final, De Groot said: “I think they are sort of similar, they’re both a little bit defensive, but I think it’s going to be a good match.”