Wimbledon champion Venus Williams thrashed fellow American Vania King 6-0 6-4 to reach the Japan Open quarter-finals on Wednesday.

The former world number one, who captured the Korea Open title at the weekend, cooled off after a red-hot start but still had too much power for King, winning in just 66 minutes.

Williams closed out proceedings with another thumping crosscourt forehand on her second match point that King could only dump into the net at full-stretch.

It was Williams's 17th victory in 19 matches since winning her sixth grand slam singles crown at Wimbledon.