Boulter is ranked thirty third on this planet after a yr which has yielded two WTA titles and a breakthrough into the highest 30.
Whereas she has been unable to go previous the third spherical of a significant, Boulter has frequently asserted her authority together with her highly effective baseline recreation.
That’s what occurred in Tokyo because the gulf between Boulter and Okamura confirmed.
Offering higher consistency from the baseline, and displaying glimpses of craft, Boulter’s degree was an excessive amount of for Okamura to deal with.
“I am taking part in some good tennis,” stated Boulter, who reached her first quarter-final since Eastbourne in June.
The medical victory units up an intriguing conflict with Canadian wildcard Bianca Andreescu.
Andreescu, 24, gained the 2019 US Open as a young person however has been tormented by damage issues since.
“It is a free swing for me on the finish of the yr and I’ve nothing to lose,” stated Boulter, who has no rating factors to defend and will transfer again into the highest 30 this week.