Serena Williams underlined her tag as the
The 37-year-old American broke serve five times and hit 25 winners as she eased to a 6-1 6-0 win over the 18th seed on Arthur Ashe Stadium
Williams, seeded eighth, is chasing a record-equaling 24th Grand Slam title.
She will face Ukraine’s fifth seed Elina Svitolina, who beat Britain’s Johanna Konta, in the semi-finals.
“When I play someone who is playing well I have to step up or go home and I’m not ready to go,” said Williams, who earned her 100th singles win at the US Open.
“Physically I’m feeling great and more importantly I’m having fun every time I come out here.”
Five-time champion Roger Federer is out of the US Open after Bulgaria’s Grigor Dimitrov won a late-night thriller to finally beat the Swiss great.
Federer, 38, had won all seven of their previous meetings but unseeded Dimitrov fought back to win 3-6 6-4 3-6 6-4 6-2.
Federer, who needed treatment for a back injury in the latter stages, said: “I felt it the whole time, but I was able to play.”
Dimitrov, 28, faces Russian fifth seed Daniil Medvedev in the last four.
“Clearly in the end he was not at his best. I used every opportunity I had,” said the Bulgarian.–BBC