Britain's Emma Raducanu is through to the quarter-finals of the women's singles at the Washington Open after beating four-time Grand Slam winner Naomi Osaka in straight sets.
After previously upsetting Ukrainian seventh seed Marta Kostyuk in round one, the 22-year-old produced a dominant performance to overcome former world number one Osaka 6-4 6-2.
The 2021 US Open women's singles champion will face wildcard Maria Sakkari in the last eight after the Greek player knocked out American second seed Emma Navarro.
Raducanu, who will replace Katie Boulter as British number one when the WTA rankings are updated on Monday, is also through to the semi-finals of the women's doubles.